81679240

素因数分解:

$2^3\times 5^1\times {\mathrm{191}}^1\times {\mathrm{10691}}^1$

素因数の和:10893

約数の個数: 32

約数和(自身を含む): 184757760

約数和(自身を除く): 103078520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 191, 382, 764, 955, 1528, 1910, 3820, 7640, 10691, 21382, 42764, 53455, 85528, 106910, 213820, 427640, 2041981, 4083962, 8167924, 10209905, 16335848, 20419810, 40839620, 81679240]

約数ペア:

[(1, 81679240), (2, 40839620), (4, 20419810), (5, 16335848), (8, 10209905), (10, 8167924), (20, 4083962), (40, 2041981), (191, 427640), (382, 213820), (764, 106910), (955, 85528), (1528, 53455), (1910, 42764), (3820, 21382), (7640, 10691)]