20779816

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{49009}}^1$

素因数の和:49068

約数の個数: 16

約数和(自身を含む): 39698100

約数和(自身を除く): 18918284

約数列:

[1, 2, 4, 8, 53, 106, 212, 424, 49009, 98018, 196036, 392072, 2597477, 5194954, 10389908, 20779816]

約数ペア:

[(1, 20779816), (2, 10389908), (4, 5194954), (8, 2597477), (53, 392072), (106, 196036), (212, 98018), (424, 49009)]