19839625

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{421}}^1$

素因数の和:478

約数の個数: 32

約数和(自身を含む): 27649440

約数和(自身を除く): 7809815

約数列:

[1, 5, 13, 25, 29, 65, 125, 145, 325, 377, 421, 725, 1625, 1885, 2105, 3625, 5473, 9425, 10525, 12209, 27365, 47125, 52625, 61045, 136825, 158717, 305225, 684125, 793585, 1526125, 3967925, 19839625]

約数ペア:

[(1, 19839625), (5, 3967925), (13, 1526125), (25, 793585), (29, 684125), (65, 305225), (125, 158717), (145, 136825), (325, 61045), (377, 52625), (421, 47125), (725, 27365), (1625, 12209), (1885, 10525), (2105, 9425), (3625, 5473)]