81116048

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{389981}}^1$

素因数の和:390002

約数の個数: 20

約数和(自身を含む): 169252188

約数和(自身を除く): 88136140

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 389981, 779962, 1559924, 3119848, 5069753, 6239696, 10139506, 20279012, 40558024, 81116048]

約数ペア:

[(1, 81116048), (2, 40558024), (4, 20279012), (8, 10139506), (13, 6239696), (16, 5069753), (26, 3119848), (52, 1559924), (104, 779962), (208, 389981)]