21686760

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{563}}^1$

素因数の和:687

約数の個数: 96

約数和(自身を含む): 71267040

約数和(自身を除く): 49580280

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 107, 120, 180, 214, 321, 360, 428, 535, 563, 642, 856, 963, 1070, 1126, 1284, 1605, 1689, 1926, 2140, 2252, 2568, 2815, 3210, 3378, 3852, 4280, 4504, 4815, 5067, 5630, 6420, 6756, 7704, 8445, 9630, 10134, 11260, 12840, 13512, 16890, 19260, 20268, 22520, 25335, 33780, 38520, 40536, 50670, 60241, 67560, 101340, 120482, 180723, 202680, 240964, 301205, 361446, 481928, 542169, 602410, 722892, 903615, 1084338, 1204820, 1445784, 1807230, 2168676, 2409640, 2710845, 3614460, 4337352, 5421690, 7228920, 10843380, 21686760]

約数ペア:

[(1, 21686760), (2, 10843380), (3, 7228920), (4, 5421690), (5, 4337352), (6, 3614460), (8, 2710845), (9, 2409640), (10, 2168676), (12, 1807230), (15, 1445784), (18, 1204820), (20, 1084338), (24, 903615), (30, 722892), (36, 602410), (40, 542169), (45, 481928), (60, 361446), (72, 301205), (90, 240964), (107, 202680), (120, 180723), (180, 120482), (214, 101340), (321, 67560), (360, 60241), (428, 50670), (535, 40536), (563, 38520), (642, 33780), (856, 25335), (963, 22520), (1070, 20268), (1126, 19260), (1284, 16890), (1605, 13512), (1689, 12840), (1926, 11260), (2140, 10134), (2252, 9630), (2568, 8445), (2815, 7704), (3210, 6756), (3378, 6420), (3852, 5630), (4280, 5067), (4504, 4815)]