8781968

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{42221}}^1$

素因数の和:42242

約数の個数: 20

約数和(自身を含む): 18324348

約数和(自身を除く): 9542380

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 42221, 84442, 168884, 337768, 548873, 675536, 1097746, 2195492, 4390984, 8781968]

約数ペア:

[(1, 8781968), (2, 4390984), (4, 2195492), (8, 1097746), (13, 675536), (16, 548873), (26, 337768), (52, 168884), (104, 84442), (208, 42221)]