20321875

素因数分解:

$5^5\times 7^1\times {\mathrm{929}}^1$

素因数の和:961

約数の個数: 24

約数和(自身を含む): 29060640

約数和(自身を除く): 8738765

約数列:

[1, 5, 7, 25, 35, 125, 175, 625, 875, 929, 3125, 4375, 4645, 6503, 21875, 23225, 32515, 116125, 162575, 580625, 812875, 2903125, 4064375, 20321875]

約数ペア:

[(1, 20321875), (5, 4064375), (7, 2903125), (25, 812875), (35, 580625), (125, 162575), (175, 116125), (625, 32515), (875, 23225), (929, 21875), (3125, 6503), (4375, 4645)]