212217620

素因数分解:

$2^2\times 5^1\times {\mathrm{10610881}}^1$

素因数の和:10610890

約数の個数: 12

約数和(自身を含む): 445657044

約数和(自身を除く): 233439424

約数列:

[1, 2, 4, 5, 10, 20, 10610881, 21221762, 42443524, 53054405, 106108810, 212217620]

約数ペア:

[(1, 212217620), (2, 106108810), (4, 53054405), (5, 42443524), (10, 21221762), (20, 10610881)]