15820625

素因数分解:

$5^4\times {\mathrm{17}}^1\times {\mathrm{1489}}^1$

素因数の和:1526

約数の個数: 20

約数和(自身を含む): 20946420

約数和(自身を除く): 5125795

約数列:

[1, 5, 17, 25, 85, 125, 425, 625, 1489, 2125, 7445, 10625, 25313, 37225, 126565, 186125, 632825, 930625, 3164125, 15820625]

約数ペア:

[(1, 15820625), (5, 3164125), (17, 930625), (25, 632825), (85, 186125), (125, 126565), (425, 37225), (625, 25313), (1489, 10625), (2125, 7445)]