18218123

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{137}}^1\times {\mathrm{157}}^1$

素因数の和:323

約数の個数: 24

約数和(自身を含む): 23199456

約数和(自身を除く): 4981333

約数列:

[1, 7, 11, 77, 121, 137, 157, 847, 959, 1099, 1507, 1727, 10549, 12089, 16577, 18997, 21509, 116039, 132979, 150563, 236599, 1656193, 2602589, 18218123]

約数ペア:

[(1, 18218123), (7, 2602589), (11, 1656193), (77, 236599), (121, 150563), (137, 132979), (157, 116039), (847, 21509), (959, 18997), (1099, 16577), (1507, 12089), (1727, 10549)]