19976080

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{5807}}^1$

素因数の和:5863

約数の個数: 40

約数和(自身を含む): 47532672

約数和(自身を除く): 27556592

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 5807, 11614, 23228, 29035, 46456, 58070, 92912, 116140, 232280, 249701, 464560, 499402, 998804, 1248505, 1997608, 2497010, 3995216, 4994020, 9988040, 19976080]

約数ペア:

[(1, 19976080), (2, 9988040), (4, 4994020), (5, 3995216), (8, 2497010), (10, 1997608), (16, 1248505), (20, 998804), (40, 499402), (43, 464560), (80, 249701), (86, 232280), (172, 116140), (215, 92912), (344, 58070), (430, 46456), (688, 29035), (860, 23228), (1720, 11614), (3440, 5807)]