21820018

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{52201}}^1$

素因数の和:52233

約数の個数: 16

約数和(自身を含む): 37585440

約数和(自身を除く): 15765422

約数列:

[1, 2, 11, 19, 22, 38, 209, 418, 52201, 104402, 574211, 991819, 1148422, 1983638, 10910009, 21820018]

約数ペア:

[(1, 21820018), (2, 10910009), (11, 1983638), (19, 1148422), (22, 991819), (38, 574211), (209, 104402), (418, 52201)]