81312625

素因数分解:

$5^3\times {\mathrm{89}}^1\times {\mathrm{7309}}^1$

素因数の和:7413

約数の個数: 16

約数和(自身を含む): 102632400

約数和(自身を除く): 21319775

約数列:

[1, 5, 25, 89, 125, 445, 2225, 7309, 11125, 36545, 182725, 650501, 913625, 3252505, 16262525, 81312625]

約数ペア:

[(1, 81312625), (5, 16262525), (25, 3252505), (89, 913625), (125, 650501), (445, 182725), (2225, 36545), (7309, 11125)]