18978335

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{227}}^1\times {\mathrm{727}}^1$

素因数の和:982

約数の個数: 16

約数和(自身を含む): 23901696

約数和(自身を除く): 4923361

約数列:

[1, 5, 23, 115, 227, 727, 1135, 3635, 5221, 16721, 26105, 83605, 165029, 825145, 3795667, 18978335]

約数ペア:

[(1, 18978335), (5, 3795667), (23, 825145), (115, 165029), (227, 83605), (727, 26105), (1135, 16721), (3635, 5221)]