19799563

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{521}}^1$

素因数の和:678

約数の個数: 16

約数和(自身を含む): 23302080

約数和(自身を除く): 3502517

約数列:

[1, 7, 61, 89, 427, 521, 623, 3647, 5429, 31781, 38003, 46369, 222467, 324583, 2828509, 19799563]

約数ペア:

[(1, 19799563), (7, 2828509), (61, 324583), (89, 222467), (427, 46369), (521, 38003), (623, 31781), (3647, 5429)]