157648420

素因数分解:

$2^2\times 5^1\times {\mathrm{821}}^1\times {\mathrm{9601}}^1$

素因数の和:10431

約数の個数: 24

約数和(自身を含む): 331499448

約数和(自身を除く): 173851028

約数列:

[1, 2, 4, 5, 10, 20, 821, 1642, 3284, 4105, 8210, 9601, 16420, 19202, 38404, 48005, 96010, 192020, 7882421, 15764842, 31529684, 39412105, 78824210, 157648420]

約数ペア:

[(1, 157648420), (2, 78824210), (4, 39412105), (5, 31529684), (10, 15764842), (20, 7882421), (821, 192020), (1642, 96010), (3284, 48005), (4105, 38404), (8210, 19202), (9601, 16420)]