21564218

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{12379}}^1$

素因数の和:12461

約数の個数: 16

約数和(自身を含む): 35357280

約数和(自身を除く): 13793062

約数列:

[1, 2, 13, 26, 67, 134, 871, 1742, 12379, 24758, 160927, 321854, 829393, 1658786, 10782109, 21564218]

約数ペア:

[(1, 21564218), (2, 10782109), (13, 1658786), (26, 829393), (67, 321854), (134, 160927), (871, 24758), (1742, 12379)]