19993025

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{227}}^1\times {\mathrm{271}}^1$

素因数の和:521

約数の個数: 24

約数和(自身を含む): 26914944

約数和(自身を除く): 6921919

約数列:

[1, 5, 13, 25, 65, 227, 271, 325, 1135, 1355, 2951, 3523, 5675, 6775, 14755, 17615, 61517, 73775, 88075, 307585, 799721, 1537925, 3998605, 19993025]

約数ペア:

[(1, 19993025), (5, 3998605), (13, 1537925), (25, 799721), (65, 307585), (227, 88075), (271, 73775), (325, 61517), (1135, 17615), (1355, 14755), (2951, 6775), (3523, 5675)]