21242760

素因数分解:

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

素因数の和:73

約数の個数: 256

約数和(自身を含む): 84326400

約数和(自身を除く): 63083640

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 14, 15, 19, 20, 21, 22, 24, 28, 30, 33, 35, 38, 40, 42, 44, 55, 56, 57, 60, 66, 70, 76, 77, 84, 88, 95, 105, 110, 114, 120, 121, 132, 133, 140, 152, 154, 165, 168, 190, 209, 210, 220, 228, 231, 242, 264, 266, 280, 285, 308, 330, 363, 380, 385, 399, 418, 420, 440, 456, 462, 484, 532, 570, 605, 616, 627, 660, 665, 726, 760, 770, 798, 836, 840, 847, 924, 968, 1045, 1064, 1140, 1155, 1210, 1254, 1320, 1330, 1331, 1452, 1463, 1540, 1596, 1672, 1694, 1815, 1848, 1995, 2090, 2280, 2299, 2310, 2420, 2508, 2541, 2660, 2662, 2904, 2926, 3080, 3135, 3192, 3388, 3630, 3990, 3993, 4180, 4235, 4389, 4598, 4620, 4840, 5016, 5082, 5320, 5324, 5852, 6270, 6655, 6776, 6897, 7260, 7315, 7980, 7986, 8360, 8470, 8778, 9196, 9240, 9317, 10164, 10648, 11495, 11704, 12540, 12705, 13310, 13794, 14520, 14630, 15960, 15972, 16093, 16940, 17556, 18392, 18634, 19965, 20328, 21945, 22990, 25080, 25289, 25410, 26620, 27588, 27951, 29260, 31944, 32186, 33880, 34485, 35112, 37268, 39930, 43890, 45980, 46585, 48279, 50578, 50820, 53240, 55176, 55902, 58520, 64372, 68970, 74536, 75867, 79860, 80465, 87780, 91960, 93170, 96558, 101156, 101640, 111804, 126445, 128744, 137940, 139755, 151734, 159720, 160930, 175560, 177023, 186340, 193116, 202312, 223608, 241395, 252890, 275880, 279510, 303468, 321860, 354046, 372680, 379335, 386232, 482790, 505780, 531069, 559020, 606936, 643720, 708092, 758670, 885115, 965580, 1011560, 1062138, 1118040, 1416184, 1517340, 1770230, 1931160, 2124276, 2655345, 3034680, 3540460, 4248552, 5310690, 7080920, 10621380, 21242760]

約数ペア:

[(1, 21242760), (2, 10621380), (3, 7080920), (4, 5310690), (5, 4248552), (6, 3540460), (7, 3034680), (8, 2655345), (10, 2124276), (11, 1931160), (12, 1770230), (14, 1517340), (15, 1416184), (19, 1118040), (20, 1062138), (21, 1011560), (22, 965580), (24, 885115), (28, 758670), (30, 708092), (33, 643720), (35, 606936), (38, 559020), (40, 531069), (42, 505780), (44, 482790), (55, 386232), (56, 379335), (57, 372680), (60, 354046), (66, 321860), (70, 303468), (76, 279510), (77, 275880), (84, 252890), (88, 241395), (95, 223608), (105, 202312), (110, 193116), (114, 186340), (120, 177023), (121, 175560), (132, 160930), (133, 159720), (140, 151734), (152, 139755), (154, 137940), (165, 128744), (168, 126445), (190, 111804), (209, 101640), (210, 101156), (220, 96558), (228, 93170), (231, 91960), (242, 87780), (264, 80465), (266, 79860), (280, 75867), (285, 74536), (308, 68970), (330, 64372), (363, 58520), (380, 55902), (385, 55176), (399, 53240), (418, 50820), (420, 50578), (440, 48279), (456, 46585), (462, 45980), (484, 43890), (532, 39930), (570, 37268), (605, 35112), (616, 34485), (627, 33880), (660, 32186), (665, 31944), (726, 29260), (760, 27951), (770, 27588), (798, 26620), (836, 25410), (840, 25289), (847, 25080), (924, 22990), (968, 21945), (1045, 20328), (1064, 19965), (1140, 18634), (1155, 18392), (1210, 17556), (1254, 16940), (1320, 16093), (1330, 15972), (1331, 15960), (1452, 14630), (1463, 14520), (1540, 13794), (1596, 13310), (1672, 12705), (1694, 12540), (1815, 11704), (1848, 11495), (1995, 10648), (2090, 10164), (2280, 9317), (2299, 9240), (2310, 9196), (2420, 8778), (2508, 8470), (2541, 8360), (2660, 7986), (2662, 7980), (2904, 7315), (2926, 7260), (3080, 6897), (3135, 6776), (3192, 6655), (3388, 6270), (3630, 5852), (3990, 5324), (3993, 5320), (4180, 5082), (4235, 5016), (4389, 4840), (4598, 4620)]