21271310

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{34871}}^1$

素因数の和:34939

約数の個数: 16

約数和(自身を含む): 38917152

約数和(自身を除く): 17645842

約数列:

[1, 2, 5, 10, 61, 122, 305, 610, 34871, 69742, 174355, 348710, 2127131, 4254262, 10635655, 21271310]

約数ペア:

[(1, 21271310), (2, 10635655), (5, 4254262), (10, 2127131), (61, 348710), (122, 174355), (305, 69742), (610, 34871)]