81250

素因数分解:

$2^1\times 5^5\times {\mathrm{13}}^1$

素因数の和:40

約数の個数: 24

約数和(自身を含む): 164052

約数和(自身を除く): 82802

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 250, 325, 625, 650, 1250, 1625, 3125, 3250, 6250, 8125, 16250, 40625, 81250]

約数ペア:

[(1, 81250), (2, 40625), (5, 16250), (10, 8125), (13, 6250), (25, 3250), (26, 3125), (50, 1625), (65, 1250), (125, 650), (130, 625), (250, 325)]