20742379

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{1567}}^1$

素因数の和:1666

約数の個数: 16

約数和(自身を含む): 24887296

約数和(自身を除く): 4144917

約数列:

[1, 7, 31, 61, 217, 427, 1567, 1891, 10969, 13237, 48577, 95587, 340039, 669109, 2963197, 20742379]

約数ペア:

[(1, 20742379), (7, 2963197), (31, 669109), (61, 340039), (217, 95587), (427, 48577), (1567, 13237), (1891, 10969)]