20780051056

素因数分解:

$2^4\times {\mathrm{4049}}^1\times {\mathrm{320759}}^1$

素因数の和:324816

約数の個数: 20

約数和(自身を含む): 40271418000

約数和(自身を除く): 19491366944

約数列:

[1, 2, 4, 8, 16, 4049, 8098, 16196, 32392, 64784, 320759, 641518, 1283036, 2566072, 5132144, 1298753191, 2597506382, 5195012764, 10390025528, 20780051056]

約数ペア:

[(1, 20780051056), (2, 10390025528), (4, 5195012764), (8, 2597506382), (16, 1298753191), (4049, 5132144), (8098, 2566072), (16196, 1283036), (32392, 641518), (64784, 320759)]