20729905

素因数分解:

$5^1\times 7^1\times {\mathrm{587}}^1\times {\mathrm{1009}}^1$

素因数の和:1608

約数の個数: 16

約数和(自身を含む): 28506240

約数和(自身を除く): 7776335

約数列:

[1, 5, 7, 35, 587, 1009, 2935, 4109, 5045, 7063, 20545, 35315, 592283, 2961415, 4145981, 20729905]

約数ペア:

[(1, 20729905), (5, 4145981), (7, 2961415), (35, 592283), (587, 35315), (1009, 20545), (2935, 7063), (4109, 5045)]