16958125

素因数分解:

$5^4\times {\mathrm{43}}^1\times {\mathrm{631}}^1$

素因数の和:694

約数の個数: 20

約数和(自身を含む): 21718048

約数和(自身を除く): 4759923

約数列:

[1, 5, 25, 43, 125, 215, 625, 631, 1075, 3155, 5375, 15775, 26875, 27133, 78875, 135665, 394375, 678325, 3391625, 16958125]

約数ペア:

[(1, 16958125), (5, 3391625), (25, 678325), (43, 394375), (125, 135665), (215, 78875), (625, 27133), (631, 26875), (1075, 15775), (3155, 5375)]