20540875

素因数分解:

$5^3\times {\mathrm{101}}^1\times {\mathrm{1627}}^1$

素因数の和:1743

約数の個数: 16

約数和(自身を含む): 25904736

約数和(自身を除く): 5363861

約数列:

[1, 5, 25, 101, 125, 505, 1627, 2525, 8135, 12625, 40675, 164327, 203375, 821635, 4108175, 20540875]

約数ペア:

[(1, 20540875), (5, 4108175), (25, 821635), (101, 203375), (125, 164327), (505, 40675), (1627, 12625), (2525, 8135)]