7980457960

素因数分解:

$2^3\times 5^1\times {\mathrm{199511449}}^1$

素因数の和:199511460

約数の個数: 16

約数和(自身を含む): 17956030500

約数和(自身を除く): 9975572540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199511449, 399022898, 798045796, 997557245, 1596091592, 1995114490, 3990228980, 7980457960]

約数ペア:

[(1, 7980457960), (2, 3990228980), (4, 1995114490), (5, 1596091592), (8, 997557245), (10, 798045796), (20, 399022898), (40, 199511449)]