12871789

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{2579}}^1$

素因数の和:2640

約数の個数: 16

約数和(自身を含む): 15851520

約数和(自身を除く): 2979731

約数列:

[1, 7, 23, 31, 161, 217, 713, 2579, 4991, 18053, 59317, 79949, 415219, 559643, 1838827, 12871789]

約数ペア:

[(1, 12871789), (7, 1838827), (23, 559643), (31, 415219), (161, 79949), (217, 59317), (713, 18053), (2579, 4991)]