19988710

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{285553}}^1$

素因数の和:285567

約数の個数: 16

約数和(自身を含む): 41119776

約数和(自身を除く): 21131066

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 285553, 571106, 1427765, 1998871, 2855530, 3997742, 9994355, 19988710]

約数ペア:

[(1, 19988710), (2, 9994355), (5, 3997742), (7, 2855530), (10, 1998871), (14, 1427765), (35, 571106), (70, 285553)]