18317125

素因数分解:

$5^3\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1$

素因数の和:238

約数の個数: 32

約数和(自身を含む): 24560640

約数和(自身を除く): 6243515

約数列:

[1, 5, 25, 29, 31, 125, 145, 155, 163, 725, 775, 815, 899, 3625, 3875, 4075, 4495, 4727, 5053, 20375, 22475, 23635, 25265, 112375, 118175, 126325, 146537, 590875, 631625, 732685, 3663425, 18317125]

約数ペア:

[(1, 18317125), (5, 3663425), (25, 732685), (29, 631625), (31, 590875), (125, 146537), (145, 126325), (155, 118175), (163, 112375), (725, 25265), (775, 23635), (815, 22475), (899, 20375), (3625, 5053), (3875, 4727), (4075, 4495)]