21440377

素因数分解:

$7^1\times {\mathrm{103}}^1\times {\mathrm{131}}^1\times {\mathrm{227}}^1$

素因数の和:468

約数の個数: 16

約数和(自身を含む): 25039872

約数和(自身を除く): 3599495

約数列:

[1, 7, 103, 131, 227, 721, 917, 1589, 13493, 23381, 29737, 94451, 163667, 208159, 3062911, 21440377]

約数ペア:

[(1, 21440377), (7, 3062911), (103, 208159), (131, 163667), (227, 94451), (721, 29737), (917, 23381), (1589, 13493)]