2148125

素因数分解:

$5^4\times 7^1\times {\mathrm{491}}^1$

素因数の和:518

約数の個数: 20

約数和(自身を含む): 3074016

約数和(自身を除く): 925891

約数列:

[1, 5, 7, 25, 35, 125, 175, 491, 625, 875, 2455, 3437, 4375, 12275, 17185, 61375, 85925, 306875, 429625, 2148125]

約数ペア:

[(1, 2148125), (5, 429625), (7, 306875), (25, 85925), (35, 61375), (125, 17185), (175, 12275), (491, 4375), (625, 3437), (875, 2455)]