21267741

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{521}}^1\times {\mathrm{1237}}^1$

素因数の和:1772

約数の個数: 16

約数和(自身を含む): 31019328

約数和(自身を除く): 9751587

約数列:

[1, 3, 11, 33, 521, 1237, 1563, 3711, 5731, 13607, 17193, 40821, 644477, 1933431, 7089247, 21267741]

約数ペア:

[(1, 21267741), (3, 7089247), (11, 1933431), (33, 644477), (521, 40821), (1237, 17193), (1563, 13607), (3711, 5731)]