21845747

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{4651}}^1$

素因数の和:4730

約数の個数: 16

約数和(自身を含む): 27688704

約数和(自身を除く): 5842957

約数列:

[1, 7, 11, 61, 77, 427, 671, 4651, 4697, 32557, 51161, 283711, 358127, 1985977, 3120821, 21845747]

約数ペア:

[(1, 21845747), (7, 3120821), (11, 1985977), (61, 358127), (77, 283711), (427, 51161), (671, 32557), (4651, 4697)]