20521475

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{233}}^1\times {\mathrm{271}}^1$

素因数の和:527

約数の個数: 24

約数和(自身を含む): 27623232

約数和(自身を除く): 7101757

約数列:

[1, 5, 13, 25, 65, 233, 271, 325, 1165, 1355, 3029, 3523, 5825, 6775, 15145, 17615, 63143, 75725, 88075, 315715, 820859, 1578575, 4104295, 20521475]

約数ペア:

[(1, 20521475), (5, 4104295), (13, 1578575), (25, 820859), (65, 315715), (233, 88075), (271, 75725), (325, 63143), (1165, 17615), (1355, 15145), (3029, 6775), (3523, 5825)]