21666491

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{6863}}^1$

素因数の和:6922

約数の個数: 16

約数和(自身を含む): 27675648

約数和(自身を除く): 6009157

約数列:

[1, 7, 11, 41, 77, 287, 451, 3157, 6863, 48041, 75493, 281383, 528451, 1969681, 3095213, 21666491]

約数ペア:

[(1, 21666491), (7, 3095213), (11, 1969681), (41, 528451), (77, 281383), (287, 75493), (451, 48041), (3157, 6863)]