19958908040

素因数分解:

$2^3\times 5^1\times {\mathrm{498972701}}^1$

素因数の和:498972712

約数の個数: 16

約数和(自身を含む): 44907543180

約数和(自身を除く): 24948635140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 498972701, 997945402, 1995890804, 2494863505, 3991781608, 4989727010, 9979454020, 19958908040]

約数ペア:

[(1, 19958908040), (2, 9979454020), (4, 4989727010), (5, 3991781608), (8, 2494863505), (10, 1995890804), (20, 997945402), (40, 498972701)]