12978721

素因数分解:

$7^1\times {\mathrm{47}}^1\times {\mathrm{103}}^1\times {\mathrm{383}}^1$

素因数の和:540

約数の個数: 16

約数和(自身を含む): 15335424

約数和(自身を除く): 2356703

約数列:

[1, 7, 47, 103, 329, 383, 721, 2681, 4841, 18001, 33887, 39449, 126007, 276143, 1854103, 12978721]

約数ペア:

[(1, 12978721), (7, 1854103), (47, 276143), (103, 126007), (329, 39449), (383, 33887), (721, 18001), (2681, 4841)]