21748792

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{209123}}^1$

素因数の和:209142

約数の個数: 16

約数和(自身を含む): 43916040

約数和(自身を除く): 22167248

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 209123, 418246, 836492, 1672984, 2718599, 5437198, 10874396, 21748792]

約数ペア:

[(1, 21748792), (2, 10874396), (4, 5437198), (8, 2718599), (13, 1672984), (26, 836492), (52, 418246), (104, 209123)]