20486860

素因数分解:

$2^2\times 5^1\times {\mathrm{727}}^1\times {\mathrm{1409}}^1$

素因数の和:2145

約数の個数: 24

約数和(自身を含む): 43112160

約数和(自身を除く): 22625300

約数列:

[1, 2, 4, 5, 10, 20, 727, 1409, 1454, 2818, 2908, 3635, 5636, 7045, 7270, 14090, 14540, 28180, 1024343, 2048686, 4097372, 5121715, 10243430, 20486860]

約数ペア:

[(1, 20486860), (2, 10243430), (4, 5121715), (5, 4097372), (10, 2048686), (20, 1024343), (727, 28180), (1409, 14540), (1454, 14090), (2818, 7270), (2908, 7045), (3635, 5636)]