811157420

素因数分解:

$2^2\times 5^1\times {\mathrm{40557871}}^1$

素因数の和:40557880

約数の個数: 12

約数和(自身を含む): 1703430624

約数和(自身を除く): 892273204

約数列:

[1, 2, 4, 5, 10, 20, 40557871, 81115742, 162231484, 202789355, 405578710, 811157420]

約数ペア:

[(1, 811157420), (2, 405578710), (4, 202789355), (5, 162231484), (10, 81115742), (20, 40557871)]