2561001121

素因数分解:

$7^2\times {\mathrm{383}}^1\times {\mathrm{136463}}^1$

素因数の和:136860

約数の個数: 12

約数和(自身を含む): 2986924032

約数和(自身を除く): 425922911

約数列:

[1, 7, 49, 383, 2681, 18767, 136463, 955241, 6686687, 52265329, 365857303, 2561001121]

約数ペア:

[(1, 2561001121), (7, 365857303), (49, 52265329), (383, 6686687), (2681, 955241), (18767, 136463)]