128502905

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{13591}}^1$

素因数の和:13688

約数の個数: 16

約数和(自身を含む): 161799168

約数和(自身を除く): 33296263

約数列:

[1, 5, 31, 61, 155, 305, 1891, 9455, 13591, 67955, 421321, 829051, 2106605, 4145255, 25700581, 128502905]

約数ペア:

[(1, 128502905), (5, 25700581), (31, 4145255), (61, 2106605), (155, 829051), (305, 421321), (1891, 67955), (9455, 13591)]