20001909

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{149}}^1\times {\mathrm{1543}}^1$

素因数の和:1724

約数の個数: 16

約数和(自身を含む): 27792000

約数和(自身を除く): 7790091

約数列:

[1, 3, 29, 87, 149, 447, 1543, 4321, 4629, 12963, 44747, 134241, 229907, 689721, 6667303, 20001909]

約数ペア:

[(1, 20001909), (3, 6667303), (29, 689721), (87, 229907), (149, 134241), (447, 44747), (1543, 12963), (4321, 4629)]