20130625

素因数分解:

$5^4\times {\mathrm{31}}^1\times {\mathrm{1039}}^1$

素因数の和:1090

約数の個数: 20

約数和(自身を含む): 25991680

約数和(自身を除く): 5861055

約数列:

[1, 5, 25, 31, 125, 155, 625, 775, 1039, 3875, 5195, 19375, 25975, 32209, 129875, 161045, 649375, 805225, 4026125, 20130625]

約数ペア:

[(1, 20130625), (5, 4026125), (25, 805225), (31, 649375), (125, 161045), (155, 129875), (625, 32209), (775, 25975), (1039, 19375), (3875, 5195)]