12781580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{91297}}^1$

素因数の和:91313

約数の個数: 24

約数和(自身を含む): 30676128

約数和(自身を除く): 17894548

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 91297, 182594, 365188, 456485, 639079, 912970, 1278158, 1825940, 2556316, 3195395, 6390790, 12781580]

約数ペア:

[(1, 12781580), (2, 6390790), (4, 3195395), (5, 2556316), (7, 1825940), (10, 1278158), (14, 912970), (20, 639079), (28, 456485), (35, 365188), (70, 182594), (140, 91297)]