21061665

素因数分解:

$3^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{5639}}^1$

素因数の和:5733

約数の個数: 24

約数和(自身を含む): 36953280

約数和(自身を除く): 15891615

約数列:

[1, 3, 5, 9, 15, 45, 83, 249, 415, 747, 1245, 3735, 5639, 16917, 28195, 50751, 84585, 253755, 468037, 1404111, 2340185, 4212333, 7020555, 21061665]

約数ペア:

[(1, 21061665), (3, 7020555), (5, 4212333), (9, 2340185), (15, 1404111), (45, 468037), (83, 253755), (249, 84585), (415, 50751), (747, 28195), (1245, 16917), (3735, 5639)]