81723180

素因数分解:

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

素因数の和:82

約数の個数: 288

約数和(自身を含む): 307238400

約数和(自身を除く): 225515220

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15, 19, 20, 21, 22, 28, 30, 33, 35, 38, 42, 44, 49, 55, 57, 60, 66, 70, 76, 77, 84, 95, 98, 105, 110, 114, 132, 133, 140, 147, 154, 165, 190, 196, 209, 210, 220, 228, 231, 245, 266, 285, 294, 308, 330, 343, 361, 380, 385, 399, 418, 420, 462, 490, 532, 539, 570, 588, 627, 660, 665, 686, 722, 735, 770, 798, 836, 924, 931, 980, 1029, 1045, 1078, 1083, 1140, 1155, 1254, 1330, 1372, 1444, 1463, 1470, 1540, 1596, 1617, 1715, 1805, 1862, 1995, 2058, 2090, 2156, 2166, 2310, 2508, 2527, 2660, 2695, 2793, 2926, 2940, 3135, 3234, 3430, 3610, 3724, 3773, 3971, 3990, 4116, 4180, 4332, 4389, 4620, 4655, 5054, 5145, 5390, 5415, 5586, 5852, 6270, 6468, 6517, 6860, 7220, 7315, 7546, 7581, 7942, 7980, 8085, 8778, 9310, 10108, 10241, 10290, 10780, 10830, 11172, 11319, 11913, 12540, 12635, 13034, 13965, 14630, 15092, 15162, 15884, 16170, 17556, 17689, 18620, 18865, 19551, 19855, 20482, 20580, 21660, 21945, 22638, 23826, 25270, 26068, 27797, 27930, 29260, 30324, 30723, 32340, 32585, 35378, 37730, 37905, 39102, 39710, 40964, 43890, 45276, 47652, 50540, 51205, 53067, 55594, 55860, 56595, 59565, 61446, 65170, 70756, 71687, 75460, 75810, 78204, 79420, 83391, 87780, 88445, 97755, 102410, 106134, 111188, 113190, 119130, 122892, 123823, 130340, 138985, 143374, 151620, 153615, 166782, 176890, 194579, 195510, 204820, 212268, 215061, 226380, 238260, 247646, 265335, 277970, 286748, 307230, 333564, 353780, 358435, 371469, 389158, 391020, 416955, 430122, 495292, 530670, 555940, 583737, 614460, 619115, 716870, 742938, 778316, 833910, 860244, 972895, 1061340, 1075305, 1167474, 1238230, 1362053, 1433740, 1485876, 1667820, 1857345, 1945790, 2150610, 2334948, 2476460, 2724106, 2918685, 3714690, 3891580, 4086159, 4301220, 5448212, 5837370, 6810265, 7429380, 8172318, 11674740, 13620530, 16344636, 20430795, 27241060, 40861590, 81723180]

約数ペア:

[(1, 81723180), (2, 40861590), (3, 27241060), (4, 20430795), (5, 16344636), (6, 13620530), (7, 11674740), (10, 8172318), (11, 7429380), (12, 6810265), (14, 5837370), (15, 5448212), (19, 4301220), (20, 4086159), (21, 3891580), (22, 3714690), (28, 2918685), (30, 2724106), (33, 2476460), (35, 2334948), (38, 2150610), (42, 1945790), (44, 1857345), (49, 1667820), (55, 1485876), (57, 1433740), (60, 1362053), (66, 1238230), (70, 1167474), (76, 1075305), (77, 1061340), (84, 972895), (95, 860244), (98, 833910), (105, 778316), (110, 742938), (114, 716870), (132, 619115), (133, 614460), (140, 583737), (147, 555940), (154, 530670), (165, 495292), (190, 430122), (196, 416955), (209, 391020), (210, 389158), (220, 371469), (228, 358435), (231, 353780), (245, 333564), (266, 307230), (285, 286748), (294, 277970), (308, 265335), (330, 247646), (343, 238260), (361, 226380), (380, 215061), (385, 212268), (399, 204820), (418, 195510), (420, 194579), (462, 176890), (490, 166782), (532, 153615), (539, 151620), (570, 143374), (588, 138985), (627, 130340), (660, 123823), (665, 122892), (686, 119130), (722, 113190), (735, 111188), (770, 106134), (798, 102410), (836, 97755), (924, 88445), (931, 87780), (980, 83391), (1029, 79420), (1045, 78204), (1078, 75810), (1083, 75460), (1140, 71687), (1155, 70756), (1254, 65170), (1330, 61446), (1372, 59565), (1444, 56595), (1463, 55860), (1470, 55594), (1540, 53067), (1596, 51205), (1617, 50540), (1715, 47652), (1805, 45276), (1862, 43890), (1995, 40964), (2058, 39710), (2090, 39102), (2156, 37905), (2166, 37730), (2310, 35378), (2508, 32585), (2527, 32340), (2660, 30723), (2695, 30324), (2793, 29260), (2926, 27930), (2940, 27797), (3135, 26068), (3234, 25270), (3430, 23826), (3610, 22638), (3724, 21945), (3773, 21660), (3971, 20580), (3990, 20482), (4116, 19855), (4180, 19551), (4332, 18865), (4389, 18620), (4620, 17689), (4655, 17556), (5054, 16170), (5145, 15884), (5390, 15162), (5415, 15092), (5586, 14630), (5852, 13965), (6270, 13034), (6468, 12635), (6517, 12540), (6860, 11913), (7220, 11319), (7315, 11172), (7546, 10830), (7581, 10780), (7942, 10290), (7980, 10241), (8085, 10108), (8778, 9310)]