212804977

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{20173}}^1$

素因数の和:20328

約数の個数: 16

約数和(自身を含む): 267265152

約数和(自身を除く): 54460175

約数列:

[1, 7, 11, 77, 137, 959, 1507, 10549, 20173, 141211, 221903, 1553321, 2763701, 19345907, 30400711, 212804977]

約数ペア:

[(1, 212804977), (7, 30400711), (11, 19345907), (77, 2763701), (137, 1553321), (959, 221903), (1507, 141211), (10549, 20173)]