20218191856

素因数分解:

$2^4\times {\mathrm{256889}}^1\times {\mathrm{4919}}^1$

素因数の和:261816

約数の個数: 20

約数和(自身を含む): 39180862800

約数和(自身を除く): 18962670944

約数列:

[1, 2, 4, 8, 16, 4919, 9838, 19676, 39352, 78704, 256889, 513778, 1027556, 2055112, 4110224, 1263636991, 2527273982, 5054547964, 10109095928, 20218191856]

約数ペア:

[(1, 20218191856), (2, 10109095928), (4, 5054547964), (8, 2527273982), (16, 1263636991), (4919, 4110224), (9838, 2055112), (19676, 1027556), (39352, 513778), (78704, 256889)]