21780154

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{431}}^1\times {\mathrm{2297}}^1$

素因数の和:2741

約数の個数: 16

約数和(自身を含む): 35738496

約数和(自身を除く): 13958342

約数列:

[1, 2, 11, 22, 431, 862, 2297, 4594, 4741, 9482, 25267, 50534, 990007, 1980014, 10890077, 21780154]

約数ペア:

[(1, 21780154), (2, 10890077), (11, 1980014), (22, 990007), (431, 50534), (862, 25267), (2297, 9482), (4594, 4741)]