21502665

素因数分解:

$3^4\times 5^1\times {\mathrm{53093}}^1$

素因数の和:53110

約数の個数: 20

約数和(自身を含む): 38546244

約数和(自身を除く): 17043579

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 53093, 159279, 265465, 477837, 796395, 1433511, 2389185, 4300533, 7167555, 21502665]

約数ペア:

[(1, 21502665), (3, 7167555), (5, 4300533), (9, 2389185), (15, 1433511), (27, 796395), (45, 477837), (81, 265465), (135, 159279), (405, 53093)]