858142747

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{521}}^1\times {\mathrm{21391}}^1$

素因数の和:21930

約数の個数: 16

約数和(自身を含む): 1071995904

約数和(自身を除く): 213853157

約数列:

[1, 7, 11, 77, 521, 3647, 5731, 21391, 40117, 149737, 235301, 1647107, 11144711, 78012977, 122591821, 858142747]

約数ペア:

[(1, 858142747), (7, 122591821), (11, 78012977), (77, 11144711), (521, 1647107), (3647, 235301), (5731, 149737), (21391, 40117)]