20485525

素因数分解:

$5^2\times {\mathrm{23}}^2\times {\mathrm{1549}}^1$

素因数の和:1605

約数の個数: 18

約数和(自身を含む): 26571650

約数和(自身を除く): 6086125

約数列:

[1, 5, 23, 25, 115, 529, 575, 1549, 2645, 7745, 13225, 35627, 38725, 178135, 819421, 890675, 4097105, 20485525]

約数ペア:

[(1, 20485525), (5, 4097105), (23, 890675), (25, 819421), (115, 178135), (529, 38725), (575, 35627), (1549, 13225), (2645, 7745)]