81705407

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{191}}^1\times {\mathrm{2657}}^1$

素因数の和:2878

約数の個数: 16

約数和(自身を含む): 97984512

約数和(自身を除く): 16279105

約数列:

[1, 7, 23, 161, 191, 1337, 2657, 4393, 18599, 30751, 61111, 427777, 507487, 3552409, 11672201, 81705407]

約数ペア:

[(1, 81705407), (7, 11672201), (23, 3552409), (161, 507487), (191, 427777), (1337, 61111), (2657, 30751), (4393, 18599)]