18487925

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{1061}}^1$

素因数の和:1129

約数の個数: 24

約数和(自身を含む): 24889032

約数和(自身を除く): 6401107

約数列:

[1, 5, 17, 25, 41, 85, 205, 425, 697, 1025, 1061, 3485, 5305, 17425, 18037, 26525, 43501, 90185, 217505, 450925, 739517, 1087525, 3697585, 18487925]

約数ペア:

[(1, 18487925), (5, 3697585), (17, 1087525), (25, 739517), (41, 450925), (85, 217505), (205, 90185), (425, 43501), (697, 26525), (1025, 18037), (1061, 17425), (3485, 5305)]