21580108

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{44587}}^1$

素因数の和:44613

約数の個数: 18

約数和(自身を含む): 41511428

約数和(自身を除く): 19931320

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 44587, 89174, 178348, 490457, 980914, 1961828, 5395027, 10790054, 21580108]

約数ペア:

[(1, 21580108), (2, 10790054), (4, 5395027), (11, 1961828), (22, 980914), (44, 490457), (121, 178348), (242, 89174), (484, 44587)]