21555976

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{207269}}^1$

素因数の和:207288

約数の個数: 16

約数和(自身を含む): 43526700

約数和(自身を除く): 21970724

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 207269, 414538, 829076, 1658152, 2694497, 5388994, 10777988, 21555976]

約数ペア:

[(1, 21555976), (2, 10777988), (4, 5388994), (8, 2694497), (13, 1658152), (26, 829076), (52, 414538), (104, 207269)]