21398072

素因数分解:

$2^3\times {\mathrm{199}}^1\times {\mathrm{13441}}^1$

素因数の和:13646

約数の個数: 16

約数和(自身を含む): 40326000

約数和(自身を除く): 18927928

約数列:

[1, 2, 4, 8, 199, 398, 796, 1592, 13441, 26882, 53764, 107528, 2674759, 5349518, 10699036, 21398072]

約数ペア:

[(1, 21398072), (2, 10699036), (4, 5349518), (8, 2674759), (199, 107528), (398, 53764), (796, 26882), (1592, 13441)]