20194375

素因数分解:

$5^4\times {\mathrm{79}}^1\times {\mathrm{409}}^1$

素因数の和:508

約数の個数: 20

約数和(自身を含む): 25616800

約数和(自身を除く): 5422425

約数列:

[1, 5, 25, 79, 125, 395, 409, 625, 1975, 2045, 9875, 10225, 32311, 49375, 51125, 161555, 255625, 807775, 4038875, 20194375]

約数ペア:

[(1, 20194375), (5, 4038875), (25, 807775), (79, 255625), (125, 161555), (395, 51125), (409, 49375), (625, 32311), (1975, 10225), (2045, 9875)]