21382525

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{907}}^1$

素因数の和:981

約数の個数: 24

約数和(自身を含む): 28373184

約数和(自身を除く): 6990659

約数列:

[1, 5, 23, 25, 41, 115, 205, 575, 907, 943, 1025, 4535, 4715, 20861, 22675, 23575, 37187, 104305, 185935, 521525, 855301, 929675, 4276505, 21382525]

約数ペア:

[(1, 21382525), (5, 4276505), (23, 929675), (25, 855301), (41, 521525), (115, 185935), (205, 104305), (575, 37187), (907, 23575), (943, 22675), (1025, 20861), (4535, 4715)]