18138875

素因数分解:

$5^3\times {\mathrm{31}}^2\times {\mathrm{151}}^1$

素因数の和:228

約数の個数: 24

約数和(自身を含む): 23546016

約数和(自身を除く): 5407141

約数列:

[1, 5, 25, 31, 125, 151, 155, 755, 775, 961, 3775, 3875, 4681, 4805, 18875, 23405, 24025, 117025, 120125, 145111, 585125, 725555, 3627775, 18138875]

約数ペア:

[(1, 18138875), (5, 3627775), (25, 725555), (31, 585125), (125, 145111), (151, 120125), (155, 117025), (755, 24025), (775, 23405), (961, 18875), (3775, 4805), (3875, 4681)]