18405688

素因数分解:

$2^3\times 7^1\times {\mathrm{103}}^1\times {\mathrm{3191}}^1$

素因数の和:3307

約数の個数: 32

約数和(自身を含む): 39836160

約数和(自身を除く): 21430472

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 103, 206, 412, 721, 824, 1442, 2884, 3191, 5768, 6382, 12764, 22337, 25528, 44674, 89348, 178696, 328673, 657346, 1314692, 2300711, 2629384, 4601422, 9202844, 18405688]

約数ペア:

[(1, 18405688), (2, 9202844), (4, 4601422), (7, 2629384), (8, 2300711), (14, 1314692), (28, 657346), (56, 328673), (103, 178696), (206, 89348), (412, 44674), (721, 25528), (824, 22337), (1442, 12764), (2884, 6382), (3191, 5768)]