21089978

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{115879}}^1$

素因数の和:115901

約数の個数: 16

約数和(自身を含む): 38935680

約数和(自身を除く): 17845702

約数列:

[1, 2, 7, 13, 14, 26, 91, 182, 115879, 231758, 811153, 1506427, 1622306, 3012854, 10544989, 21089978]

約数ペア:

[(1, 21089978), (2, 10544989), (7, 3012854), (13, 1622306), (14, 1506427), (26, 811153), (91, 231758), (182, 115879)]