68042020

素因数分解:

$2^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{8081}}^1$

素因数の和:8511

約数の個数: 24

約数和(自身を含む): 143245368

約数和(自身を除く): 75203348

約数列:

[1, 2, 4, 5, 10, 20, 421, 842, 1684, 2105, 4210, 8081, 8420, 16162, 32324, 40405, 80810, 161620, 3402101, 6804202, 13608404, 17010505, 34021010, 68042020]

約数ペア:

[(1, 68042020), (2, 34021010), (4, 17010505), (5, 13608404), (10, 6804202), (20, 3402101), (421, 161620), (842, 80810), (1684, 40405), (2105, 32324), (4210, 16162), (8081, 8420)]