2640625

素因数分解:

$5^6\times {\mathrm{13}}^2$

素因数の和:56

約数の個数: 21

約数和(自身を含む): 3574173

約数和(自身を除く): 933548

約数列:

[1, 5, 13, 25, 65, 125, 169, 325, 625, 845, 1625, 3125, 4225, 8125, 15625, 21125, 40625, 105625, 203125, 528125, 2640625]

約数ペア:

[(1, 2640625), (5, 528125), (13, 203125), (25, 105625), (65, 40625), (125, 21125), (169, 15625), (325, 8125), (625, 4225), (845, 3125)]