20390125

素因数分解:

$5^3\times 7^2\times {\mathrm{3329}}^1$

素因数の和:3358

約数の個数: 24

約数和(自身を含む): 29610360

約数和(自身を除く): 9220235

約数列:

[1, 5, 7, 25, 35, 49, 125, 175, 245, 875, 1225, 3329, 6125, 16645, 23303, 83225, 116515, 163121, 416125, 582575, 815605, 2912875, 4078025, 20390125]

約数ペア:

[(1, 20390125), (5, 4078025), (7, 2912875), (25, 815605), (35, 582575), (49, 416125), (125, 163121), (175, 116515), (245, 83225), (875, 23303), (1225, 16645), (3329, 6125)]