18538820

素因数分解:

$2^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{8663}}^1$

素因数の和:8779

約数の個数: 24

約数和(自身を含む): 39299904

約数和(自身を除く): 20761084

約数列:

[1, 2, 4, 5, 10, 20, 107, 214, 428, 535, 1070, 2140, 8663, 17326, 34652, 43315, 86630, 173260, 926941, 1853882, 3707764, 4634705, 9269410, 18538820]

約数ペア:

[(1, 18538820), (2, 9269410), (4, 4634705), (5, 3707764), (10, 1853882), (20, 926941), (107, 173260), (214, 86630), (428, 43315), (535, 34652), (1070, 17326), (2140, 8663)]