18957275

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{401}}^1$

素因数の和:503

約数の個数: 24

約数和(自身を含む): 24724608

約数和(自身を除く): 5767333

約数列:

[1, 5, 25, 31, 61, 155, 305, 401, 775, 1525, 1891, 2005, 9455, 10025, 12431, 24461, 47275, 62155, 122305, 310775, 611525, 758291, 3791455, 18957275]

約数ペア:

[(1, 18957275), (5, 3791455), (25, 758291), (31, 611525), (61, 310775), (155, 122305), (305, 62155), (401, 47275), (775, 24461), (1525, 12431), (1891, 10025), (2005, 9455)]