19681940

素因数分解:

$2^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{5437}}^1$

素因数の和:5627

約数の個数: 24

約数和(自身を含む): 41568072

約数和(自身を除く): 21886132

約数列:

[1, 2, 4, 5, 10, 20, 181, 362, 724, 905, 1810, 3620, 5437, 10874, 21748, 27185, 54370, 108740, 984097, 1968194, 3936388, 4920485, 9840970, 19681940]

約数ペア:

[(1, 19681940), (2, 9840970), (4, 4920485), (5, 3936388), (10, 1968194), (20, 984097), (181, 108740), (362, 54370), (724, 27185), (905, 21748), (1810, 10874), (3620, 5437)]