21439862

素因数分解:

$2^1\times {\mathrm{103}}^1\times {\mathrm{199}}^1\times {\mathrm{523}}^1$

素因数の和:827

約数の個数: 16

約数和(自身を含む): 32697600

約数和(自身を除く): 11257738

約数列:

[1, 2, 103, 199, 206, 398, 523, 1046, 20497, 40994, 53869, 104077, 107738, 208154, 10719931, 21439862]

約数ペア:

[(1, 21439862), (2, 10719931), (103, 208154), (199, 107738), (206, 104077), (398, 53869), (523, 40994), (1046, 20497)]