20171971880

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{7102807}}^1$

素因数の和:7102889

約数の個数: 32

約数和(自身を含む): 46026195840

約数和(自身を除く): 25854223960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 7102807, 14205614, 28411228, 35514035, 56822456, 71028070, 142056140, 284112280, 504299297, 1008598594, 2017197188, 2521496485, 4034394376, 5042992970, 10085985940, 20171971880]

約数ペア:

[(1, 20171971880), (2, 10085985940), (4, 5042992970), (5, 4034394376), (8, 2521496485), (10, 2017197188), (20, 1008598594), (40, 504299297), (71, 284112280), (142, 142056140), (284, 71028070), (355, 56822456), (568, 35514035), (710, 28411228), (1420, 14205614), (2840, 7102807)]