20507211025

素因数分解:

$5^2\times 7^1\times {\mathrm{661}}^1\times {\mathrm{177283}}^1$

素因数の和:177961

約数の個数: 24

約数和(自身を含む): 29105777984

約数和(自身を除く): 8598566959

約数列:

[1, 5, 7, 25, 35, 175, 661, 3305, 4627, 16525, 23135, 115675, 177283, 886415, 1240981, 4432075, 6204905, 31024525, 117184063, 585920315, 820288441, 2929601575, 4101442205, 20507211025]

約数ペア:

[(1, 20507211025), (5, 4101442205), (7, 2929601575), (25, 820288441), (35, 585920315), (175, 117184063), (661, 31024525), (3305, 6204905), (4627, 4432075), (16525, 1240981), (23135, 886415), (115675, 177283)]