7220525

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{1709}}^1$

素因数の和:1745

約数の個数: 18

約数和(自身を含む): 9700830

約数和(自身を除く): 2480305

約数列:

[1, 5, 13, 25, 65, 169, 325, 845, 1709, 4225, 8545, 22217, 42725, 111085, 288821, 555425, 1444105, 7220525]

約数ペア:

[(1, 7220525), (5, 1444105), (13, 555425), (25, 288821), (65, 111085), (169, 42725), (325, 22217), (845, 8545), (1709, 4225)]