65728280

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{499}}^1$

素因数の和:636

約数の個数: 64

約数和(自身を含む): 153900000

約数和(自身を除く): 88171720

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 89, 148, 178, 185, 296, 356, 370, 445, 499, 712, 740, 890, 998, 1480, 1780, 1996, 2495, 3293, 3560, 3992, 4990, 6586, 9980, 13172, 16465, 18463, 19960, 26344, 32930, 36926, 44411, 65860, 73852, 88822, 92315, 131720, 147704, 177644, 184630, 222055, 355288, 369260, 444110, 738520, 888220, 1643207, 1776440, 3286414, 6572828, 8216035, 13145656, 16432070, 32864140, 65728280]

約数ペア:

[(1, 65728280), (2, 32864140), (4, 16432070), (5, 13145656), (8, 8216035), (10, 6572828), (20, 3286414), (37, 1776440), (40, 1643207), (74, 888220), (89, 738520), (148, 444110), (178, 369260), (185, 355288), (296, 222055), (356, 184630), (370, 177644), (445, 147704), (499, 131720), (712, 92315), (740, 88822), (890, 73852), (998, 65860), (1480, 44411), (1780, 36926), (1996, 32930), (2495, 26344), (3293, 19960), (3560, 18463), (3992, 16465), (4990, 13172), (6586, 9980)]