21325675

素因数分解:

$5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{3931}}^1$

素因数の和:3979

約数の個数: 24

約数和(自身を含む): 31204352

約数和(自身を除く): 9878677

約数列:

[1, 5, 7, 25, 31, 35, 155, 175, 217, 775, 1085, 3931, 5425, 19655, 27517, 98275, 121861, 137585, 609305, 687925, 853027, 3046525, 4265135, 21325675]

約数ペア:

[(1, 21325675), (5, 4265135), (7, 3046525), (25, 853027), (31, 687925), (35, 609305), (155, 137585), (175, 121861), (217, 98275), (775, 27517), (1085, 19655), (3931, 5425)]