18220175

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{997}}^1$

素因数の和:1067

約数の個数: 24

約数和(自身を含む): 24502896

約数和(自身を除く): 6282721

約数列:

[1, 5, 17, 25, 43, 85, 215, 425, 731, 997, 1075, 3655, 4985, 16949, 18275, 24925, 42871, 84745, 214355, 423725, 728807, 1071775, 3644035, 18220175]

約数ペア:

[(1, 18220175), (5, 3644035), (17, 1071775), (25, 728807), (43, 423725), (85, 214355), (215, 84745), (425, 42871), (731, 24925), (997, 18275), (1075, 16949), (3655, 4985)]