21900979580

素因数分解:

$2^2\times 5^1\times {\mathrm{821}}^1\times {\mathrm{1333799}}^1$

素因数の和:1334629

約数の個数: 24

約数和(自身を含む): 46048111200

約数和(自身を除く): 24147131620

約数列:

[1, 2, 4, 5, 10, 20, 821, 1642, 3284, 4105, 8210, 16420, 1333799, 2667598, 5335196, 6668995, 13337990, 26675980, 1095048979, 2190097958, 4380195916, 5475244895, 10950489790, 21900979580]

約数ペア:

[(1, 21900979580), (2, 10950489790), (4, 5475244895), (5, 4380195916), (10, 2190097958), (20, 1095048979), (821, 26675980), (1642, 13337990), (3284, 6668995), (4105, 5335196), (8210, 2667598), (16420, 1333799)]