21226575

素因数分解:

$3^1\times 5^2\times {\mathrm{73}}^1\times {\mathrm{3877}}^1$

素因数の和:3963

約数の個数: 24

約数和(自身を含む): 35584528

約数和(自身を除く): 14357953

約数列:

[1, 3, 5, 15, 25, 73, 75, 219, 365, 1095, 1825, 3877, 5475, 11631, 19385, 58155, 96925, 283021, 290775, 849063, 1415105, 4245315, 7075525, 21226575]

約数ペア:

[(1, 21226575), (3, 7075525), (5, 4245315), (15, 1415105), (25, 849063), (73, 290775), (75, 283021), (219, 96925), (365, 58155), (1095, 19385), (1825, 11631), (3877, 5475)]