215501480

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{191}}^1\times {\mathrm{421}}^1$

素因数の和:690

約数の個数: 64

約数和(自身を含む): 495866880

約数和(自身を除く): 280365400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 191, 268, 335, 382, 421, 536, 670, 764, 842, 955, 1340, 1528, 1684, 1910, 2105, 2680, 3368, 3820, 4210, 7640, 8420, 12797, 16840, 25594, 28207, 51188, 56414, 63985, 80411, 102376, 112828, 127970, 141035, 160822, 225656, 255940, 282070, 321644, 402055, 511880, 564140, 643288, 804110, 1128280, 1608220, 3216440, 5387537, 10775074, 21550148, 26937685, 43100296, 53875370, 107750740, 215501480]

約数ペア:

[(1, 215501480), (2, 107750740), (4, 53875370), (5, 43100296), (8, 26937685), (10, 21550148), (20, 10775074), (40, 5387537), (67, 3216440), (134, 1608220), (191, 1128280), (268, 804110), (335, 643288), (382, 564140), (421, 511880), (536, 402055), (670, 321644), (764, 282070), (842, 255940), (955, 225656), (1340, 160822), (1528, 141035), (1684, 127970), (1910, 112828), (2105, 102376), (2680, 80411), (3368, 63985), (3820, 56414), (4210, 51188), (7640, 28207), (8420, 25594), (12797, 16840)]