20514220

素因数分解:

$2^2\times 5^1\times {\mathrm{349}}^1\times {\mathrm{2939}}^1$

素因数の和:3297

約数の個数: 24

約数和(自身を含む): 43218000

約数和(自身を除く): 22703780

約数列:

[1, 2, 4, 5, 10, 20, 349, 698, 1396, 1745, 2939, 3490, 5878, 6980, 11756, 14695, 29390, 58780, 1025711, 2051422, 4102844, 5128555, 10257110, 20514220]

約数ペア:

[(1, 20514220), (2, 10257110), (4, 5128555), (5, 4102844), (10, 2051422), (20, 1025711), (349, 58780), (698, 29390), (1396, 14695), (1745, 11756), (2939, 6980), (3490, 5878)]