19804405

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{151}}^1\times {\mathrm{1543}}^1$

素因数の和:1716

約数の個数: 16

約数和(自身を含む): 25346304

約数和(自身を除く): 5541899

約数列:

[1, 5, 17, 85, 151, 755, 1543, 2567, 7715, 12835, 26231, 131155, 232993, 1164965, 3960881, 19804405]

約数ペア:

[(1, 19804405), (5, 3960881), (17, 1164965), (85, 232993), (151, 131155), (755, 26231), (1543, 12835), (2567, 7715)]