21108975

素因数分解:

$3^1\times 5^2\times {\mathrm{83}}^1\times {\mathrm{3391}}^1$

素因数の和:3487

約数の個数: 24

約数和(自身を含む): 35331072

約数和(自身を除く): 14222097

約数列:

[1, 3, 5, 15, 25, 75, 83, 249, 415, 1245, 2075, 3391, 6225, 10173, 16955, 50865, 84775, 254325, 281453, 844359, 1407265, 4221795, 7036325, 21108975]

約数ペア:

[(1, 21108975), (3, 7036325), (5, 4221795), (15, 1407265), (25, 844359), (75, 281453), (83, 254325), (249, 84775), (415, 50865), (1245, 16955), (2075, 10173), (3391, 6225)]