18909475

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{701}}^1$

素因数の和:807

約数の個数: 24

約数和(自身を含む): 25592112

約数和(自身を除く): 6682637

約数列:

[1, 5, 13, 25, 65, 83, 325, 415, 701, 1079, 2075, 3505, 5395, 9113, 17525, 26975, 45565, 58183, 227825, 290915, 756379, 1454575, 3781895, 18909475]

約数ペア:

[(1, 18909475), (5, 3781895), (13, 1454575), (25, 756379), (65, 290915), (83, 227825), (325, 58183), (415, 45565), (701, 26975), (1079, 17525), (2075, 9113), (3505, 5395)]