123978120

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{3989}}^1$

素因数の和:4047

約数の個数: 128

約数和(自身を含む): 436665600

約数和(自身を除く): 312687480

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 37, 40, 42, 56, 60, 70, 74, 84, 105, 111, 120, 140, 148, 168, 185, 210, 222, 259, 280, 296, 370, 420, 444, 518, 555, 740, 777, 840, 888, 1036, 1110, 1295, 1480, 1554, 2072, 2220, 2590, 3108, 3885, 3989, 4440, 5180, 6216, 7770, 7978, 10360, 11967, 15540, 15956, 19945, 23934, 27923, 31080, 31912, 39890, 47868, 55846, 59835, 79780, 83769, 95736, 111692, 119670, 139615, 147593, 159560, 167538, 223384, 239340, 279230, 295186, 335076, 418845, 442779, 478680, 558460, 590372, 670152, 737965, 837690, 885558, 1033151, 1116920, 1180744, 1475930, 1675380, 1771116, 2066302, 2213895, 2951860, 3099453, 3350760, 3542232, 4132604, 4427790, 5165755, 5903720, 6198906, 8265208, 8855580, 10331510, 12397812, 15497265, 17711160, 20663020, 24795624, 30994530, 41326040, 61989060, 123978120]

約数ペア:

[(1, 123978120), (2, 61989060), (3, 41326040), (4, 30994530), (5, 24795624), (6, 20663020), (7, 17711160), (8, 15497265), (10, 12397812), (12, 10331510), (14, 8855580), (15, 8265208), (20, 6198906), (21, 5903720), (24, 5165755), (28, 4427790), (30, 4132604), (35, 3542232), (37, 3350760), (40, 3099453), (42, 2951860), (56, 2213895), (60, 2066302), (70, 1771116), (74, 1675380), (84, 1475930), (105, 1180744), (111, 1116920), (120, 1033151), (140, 885558), (148, 837690), (168, 737965), (185, 670152), (210, 590372), (222, 558460), (259, 478680), (280, 442779), (296, 418845), (370, 335076), (420, 295186), (444, 279230), (518, 239340), (555, 223384), (740, 167538), (777, 159560), (840, 147593), (888, 139615), (1036, 119670), (1110, 111692), (1295, 95736), (1480, 83769), (1554, 79780), (2072, 59835), (2220, 55846), (2590, 47868), (3108, 39890), (3885, 31912), (3989, 31080), (4440, 27923), (5180, 23934), (6216, 19945), (7770, 15956), (7978, 15540), (10360, 11967)]