18708625

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{397}}^1$

素因数の和:454

約数の個数: 32

約数和(自身を含む): 26076960

約数和(自身を除く): 7368335

約数列:

[1, 5, 13, 25, 29, 65, 125, 145, 325, 377, 397, 725, 1625, 1885, 1985, 3625, 5161, 9425, 9925, 11513, 25805, 47125, 49625, 57565, 129025, 149669, 287825, 645125, 748345, 1439125, 3741725, 18708625]

約数ペア:

[(1, 18708625), (5, 3741725), (13, 1439125), (25, 748345), (29, 645125), (65, 287825), (125, 149669), (145, 129025), (325, 57565), (377, 49625), (397, 47125), (725, 25805), (1625, 11513), (1885, 9925), (1985, 9425), (3625, 5161)]