290420977

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{163987}}^1$

素因数の和:164028

約数の個数: 16

約数和(自身を含む): 377828352

約数和(自身を除く): 87407375

約数列:

[1, 7, 11, 23, 77, 161, 253, 1771, 163987, 1147909, 1803857, 3771701, 12626999, 26401907, 41488711, 290420977]

約数ペア:

[(1, 290420977), (7, 41488711), (11, 26401907), (23, 12626999), (77, 3771701), (161, 1803857), (253, 1147909), (1771, 163987)]