20284225

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{4801}}^1$

素因数の和:4837

約数の個数: 18

約数和(自身を含む): 27241746

約数和(自身を除く): 6957521

約数列:

[1, 5, 13, 25, 65, 169, 325, 845, 4225, 4801, 24005, 62413, 120025, 312065, 811369, 1560325, 4056845, 20284225]

約数ペア:

[(1, 20284225), (5, 4056845), (13, 1560325), (25, 811369), (65, 312065), (169, 120025), (325, 62413), (845, 24005), (4225, 4801)]