51640821

素因数分解:

$3^4\times {\mathrm{109}}^1\times {\mathrm{5849}}^1$

素因数の和:5970

約数の個数: 20

約数和(自身を含む): 77863500

約数和(自身を除く): 26222679

約数列:

[1, 3, 9, 27, 81, 109, 327, 981, 2943, 5849, 8829, 17547, 52641, 157923, 473769, 637541, 1912623, 5737869, 17213607, 51640821]

約数ペア:

[(1, 51640821), (3, 17213607), (9, 5737869), (27, 1912623), (81, 637541), (109, 473769), (327, 157923), (981, 52641), (2943, 17547), (5849, 8829)]