31909480

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{19457}}^1$

素因数の和:19509

約数の個数: 32

約数和(自身を含む): 73551240

約数和(自身を除く): 41641760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 19457, 38914, 77828, 97285, 155656, 194570, 389140, 778280, 797737, 1595474, 3190948, 3988685, 6381896, 7977370, 15954740, 31909480]

約数ペア:

[(1, 31909480), (2, 15954740), (4, 7977370), (5, 6381896), (8, 3988685), (10, 3190948), (20, 1595474), (40, 797737), (41, 778280), (82, 389140), (164, 194570), (205, 155656), (328, 97285), (410, 77828), (820, 38914), (1640, 19457)]