21054943

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{3793}}^1$

素因数の和:3874

約数の個数: 16

約数和(自身を含む): 26345536

約数和(自身を除く): 5290593

約数列:

[1, 7, 13, 61, 91, 427, 793, 3793, 5551, 26551, 49309, 231373, 345163, 1619611, 3007849, 21054943]

約数ペア:

[(1, 21054943), (7, 3007849), (13, 1619611), (61, 345163), (91, 231373), (427, 49309), (793, 26551), (3793, 5551)]