21939944

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{210961}}^1$

素因数の和:210980

約数の個数: 16

約数和(自身を含む): 44302020

約数和(自身を除く): 22362076

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 210961, 421922, 843844, 1687688, 2742493, 5484986, 10969972, 21939944]

約数ペア:

[(1, 21939944), (2, 10969972), (4, 5484986), (8, 2742493), (13, 1687688), (26, 843844), (52, 421922), (104, 210961)]