9965432080

素因数分解:

$2^4\times 5^1\times {\mathrm{124567901}}^1$

素因数の和:124567914

約数の個数: 20

約数和(自身を含む): 23169629772

約数和(自身を除く): 13204197692

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 124567901, 249135802, 498271604, 622839505, 996543208, 1245679010, 1993086416, 2491358020, 4982716040, 9965432080]

約数ペア:

[(1, 9965432080), (2, 4982716040), (4, 2491358020), (5, 1993086416), (8, 1245679010), (10, 996543208), (16, 622839505), (20, 498271604), (40, 249135802), (80, 124567901)]