64151440

素因数分解:

$2^4\times 5^1\times {\mathrm{499}}^1\times {\mathrm{1607}}^1$

素因数の和:2119

約数の個数: 40

約数和(自身を含む): 149544000

約数和(自身を除く): 85392560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 499, 998, 1607, 1996, 2495, 3214, 3992, 4990, 6428, 7984, 8035, 9980, 12856, 16070, 19960, 25712, 32140, 39920, 64280, 128560, 801893, 1603786, 3207572, 4009465, 6415144, 8018930, 12830288, 16037860, 32075720, 64151440]

約数ペア:

[(1, 64151440), (2, 32075720), (4, 16037860), (5, 12830288), (8, 8018930), (10, 6415144), (16, 4009465), (20, 3207572), (40, 1603786), (80, 801893), (499, 128560), (998, 64280), (1607, 39920), (1996, 32140), (2495, 25712), (3214, 19960), (3992, 16070), (4990, 12856), (6428, 9980), (7984, 8035)]