20213867525

素因数分解:

$5^2\times {\mathrm{25981}}^1\times {\mathrm{31121}}^1$

素因数の和:57112

約数の個数: 12

約数和(自身を含む): 25066965924

約数和(自身を除く): 4853098399

約数列:

[1, 5, 25, 25981, 31121, 129905, 155605, 649525, 778025, 808554701, 4042773505, 20213867525]

約数ペア:

[(1, 20213867525), (5, 4042773505), (25, 808554701), (25981, 778025), (31121, 649525), (129905, 155605)]