21738418

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{12479}}^1$

素因数の和:12561

約数の個数: 16

約数和(自身を含む): 35642880

約数和(自身を除く): 13904462

約数列:

[1, 2, 13, 26, 67, 134, 871, 1742, 12479, 24958, 162227, 324454, 836093, 1672186, 10869209, 21738418]

約数ペア:

[(1, 21738418), (2, 10869209), (13, 1672186), (26, 836093), (67, 324454), (134, 162227), (871, 24958), (1742, 12479)]