42782020

素因数分解:

$2^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{5081}}^1$

素因数の和:5511

約数の個数: 24

約数和(自身を含む): 90073368

約数和(自身を除く): 47291348

約数列:

[1, 2, 4, 5, 10, 20, 421, 842, 1684, 2105, 4210, 5081, 8420, 10162, 20324, 25405, 50810, 101620, 2139101, 4278202, 8556404, 10695505, 21391010, 42782020]

約数ペア:

[(1, 42782020), (2, 21391010), (4, 10695505), (5, 8556404), (10, 4278202), (20, 2139101), (421, 101620), (842, 50810), (1684, 25405), (2105, 20324), (4210, 10162), (5081, 8420)]