80140540

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{56437}}^1$

素因数の和:56517

約数の個数: 24

約数和(自身を含む): 170668512

約数和(自身を除く): 90527972

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 56437, 112874, 225748, 282185, 564370, 1128740, 4007027, 8014054, 16028108, 20035135, 40070270, 80140540]

約数ペア:

[(1, 80140540), (2, 40070270), (4, 20035135), (5, 16028108), (10, 8014054), (20, 4007027), (71, 1128740), (142, 564370), (284, 282185), (355, 225748), (710, 112874), (1420, 56437)]