18131875

素因数分解:

$5^4\times {\mathrm{67}}^1\times {\mathrm{433}}^1$

素因数の和:520

約数の個数: 20

約数和(自身を含む): 23048872

約数和(自身を除く): 4916997

約数列:

[1, 5, 25, 67, 125, 335, 433, 625, 1675, 2165, 8375, 10825, 29011, 41875, 54125, 145055, 270625, 725275, 3626375, 18131875]

約数ペア:

[(1, 18131875), (5, 3626375), (25, 725275), (67, 270625), (125, 145055), (335, 54125), (433, 41875), (625, 29011), (1675, 10825), (2165, 8375)]