18251920

素因数分解:

$2^4\times 5^1\times {\mathrm{337}}^1\times {\mathrm{677}}^1$

素因数の和:1027

約数の個数: 40

約数和(自身を含む): 42624504

約数和(自身を除く): 24372584

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 337, 674, 677, 1348, 1354, 1685, 2696, 2708, 3370, 3385, 5392, 5416, 6740, 6770, 10832, 13480, 13540, 26960, 27080, 54160, 228149, 456298, 912596, 1140745, 1825192, 2281490, 3650384, 4562980, 9125960, 18251920]

約数ペア:

[(1, 18251920), (2, 9125960), (4, 4562980), (5, 3650384), (8, 2281490), (10, 1825192), (16, 1140745), (20, 912596), (40, 456298), (80, 228149), (337, 54160), (674, 27080), (677, 26960), (1348, 13540), (1354, 13480), (1685, 10832), (2696, 6770), (2708, 6740), (3370, 5416), (3385, 5392)]