20891640

素因数分解:

$2^3\times 3^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1$

素因数の和:75

約数の個数: 384

約数和(自身を含む): 88646400

約数和(自身を除く): 67754760

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 14, 15, 17, 19, 20, 21, 22, 24, 28, 30, 33, 34, 35, 38, 40, 42, 44, 49, 51, 55, 56, 57, 60, 66, 68, 70, 76, 77, 84, 85, 88, 95, 98, 102, 105, 110, 114, 119, 120, 132, 133, 136, 140, 147, 152, 154, 165, 168, 170, 187, 190, 196, 204, 209, 210, 220, 228, 231, 238, 245, 255, 264, 266, 280, 285, 294, 308, 323, 330, 340, 357, 374, 380, 385, 392, 399, 408, 418, 420, 440, 456, 462, 476, 490, 510, 532, 539, 561, 570, 588, 595, 616, 627, 646, 660, 665, 680, 714, 735, 748, 760, 770, 798, 833, 836, 840, 924, 931, 935, 952, 969, 980, 1020, 1045, 1064, 1078, 1122, 1140, 1155, 1176, 1190, 1254, 1292, 1309, 1320, 1330, 1428, 1463, 1470, 1496, 1540, 1596, 1615, 1617, 1666, 1672, 1785, 1848, 1862, 1870, 1938, 1960, 1995, 2040, 2090, 2156, 2244, 2261, 2280, 2310, 2380, 2499, 2508, 2584, 2618, 2660, 2695, 2793, 2805, 2856, 2926, 2940, 3080, 3135, 3192, 3230, 3234, 3332, 3553, 3570, 3724, 3740, 3876, 3927, 3990, 4165, 4180, 4312, 4389, 4488, 4522, 4620, 4655, 4760, 4845, 4998, 5016, 5236, 5320, 5390, 5586, 5610, 5852, 5880, 6270, 6460, 6468, 6545, 6664, 6783, 7106, 7140, 7315, 7448, 7480, 7752, 7854, 7980, 8085, 8330, 8360, 8778, 9044, 9163, 9240, 9310, 9690, 9996, 10241, 10472, 10659, 10780, 11172, 11220, 11305, 11704, 12495, 12540, 12920, 12936, 13090, 13566, 13965, 14212, 14280, 14630, 15708, 15827, 15960, 16170, 16660, 17556, 17765, 18088, 18326, 18620, 19380, 19635, 19992, 20482, 21318, 21560, 21945, 22344, 22440, 22610, 24871, 24990, 25080, 26180, 27132, 27489, 27930, 28424, 29260, 30723, 31416, 31654, 32340, 33320, 33915, 35112, 35530, 36652, 37240, 38760, 39270, 40964, 42636, 43890, 45220, 45815, 47481, 49742, 49980, 51205, 52360, 53295, 54264, 54978, 55860, 58520, 61446, 63308, 64680, 67830, 71060, 73304, 74613, 78540, 79135, 81928, 85272, 87780, 90440, 91630, 94962, 99484, 99960, 102410, 106590, 109956, 111720, 122892, 124355, 126616, 135660, 137445, 142120, 149226, 153615, 157080, 158270, 174097, 175560, 183260, 189924, 198968, 204820, 213180, 219912, 237405, 245784, 248710, 271320, 274890, 298452, 307230, 316540, 348194, 366520, 373065, 379848, 409640, 426360, 474810, 497420, 522291, 549780, 596904, 614460, 633080, 696388, 746130, 870485, 949620, 994840, 1044582, 1099560, 1228920, 1392776, 1492260, 1740970, 1899240, 2089164, 2611455, 2984520, 3481940, 4178328, 5222910, 6963880, 10445820, 20891640]

約数ペア:

[(1, 20891640), (2, 10445820), (3, 6963880), (4, 5222910), (5, 4178328), (6, 3481940), (7, 2984520), (8, 2611455), (10, 2089164), (11, 1899240), (12, 1740970), (14, 1492260), (15, 1392776), (17, 1228920), (19, 1099560), (20, 1044582), (21, 994840), (22, 949620), (24, 870485), (28, 746130), (30, 696388), (33, 633080), (34, 614460), (35, 596904), (38, 549780), (40, 522291), (42, 497420), (44, 474810), (49, 426360), (51, 409640), (55, 379848), (56, 373065), (57, 366520), (60, 348194), (66, 316540), (68, 307230), (70, 298452), (76, 274890), (77, 271320), (84, 248710), (85, 245784), (88, 237405), (95, 219912), (98, 213180), (102, 204820), (105, 198968), (110, 189924), (114, 183260), (119, 175560), (120, 174097), (132, 158270), (133, 157080), (136, 153615), (140, 149226), (147, 142120), (152, 137445), (154, 135660), (165, 126616), (168, 124355), (170, 122892), (187, 111720), (190, 109956), (196, 106590), (204, 102410), (209, 99960), (210, 99484), (220, 94962), (228, 91630), (231, 90440), (238, 87780), (245, 85272), (255, 81928), (264, 79135), (266, 78540), (280, 74613), (285, 73304), (294, 71060), (308, 67830), (323, 64680), (330, 63308), (340, 61446), (357, 58520), (374, 55860), (380, 54978), (385, 54264), (392, 53295), (399, 52360), (408, 51205), (418, 49980), (420, 49742), (440, 47481), (456, 45815), (462, 45220), (476, 43890), (490, 42636), (510, 40964), (532, 39270), (539, 38760), (561, 37240), (570, 36652), (588, 35530), (595, 35112), (616, 33915), (627, 33320), (646, 32340), (660, 31654), (665, 31416), (680, 30723), (714, 29260), (735, 28424), (748, 27930), (760, 27489), (770, 27132), (798, 26180), (833, 25080), (836, 24990), (840, 24871), (924, 22610), (931, 22440), (935, 22344), (952, 21945), (969, 21560), (980, 21318), (1020, 20482), (1045, 19992), (1064, 19635), (1078, 19380), (1122, 18620), (1140, 18326), (1155, 18088), (1176, 17765), (1190, 17556), (1254, 16660), (1292, 16170), (1309, 15960), (1320, 15827), (1330, 15708), (1428, 14630), (1463, 14280), (1470, 14212), (1496, 13965), (1540, 13566), (1596, 13090), (1615, 12936), (1617, 12920), (1666, 12540), (1672, 12495), (1785, 11704), (1848, 11305), (1862, 11220), (1870, 11172), (1938, 10780), (1960, 10659), (1995, 10472), (2040, 10241), (2090, 9996), (2156, 9690), (2244, 9310), (2261, 9240), (2280, 9163), (2310, 9044), (2380, 8778), (2499, 8360), (2508, 8330), (2584, 8085), (2618, 7980), (2660, 7854), (2695, 7752), (2793, 7480), (2805, 7448), (2856, 7315), (2926, 7140), (2940, 7106), (3080, 6783), (3135, 6664), (3192, 6545), (3230, 6468), (3234, 6460), (3332, 6270), (3553, 5880), (3570, 5852), (3724, 5610), (3740, 5586), (3876, 5390), (3927, 5320), (3990, 5236), (4165, 5016), (4180, 4998), (4312, 4845), (4389, 4760), (4488, 4655), (4522, 4620)]