21959377

素因数分解:

${\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{907}}^1$

素因数の和:1020

約数の個数: 16

約数和(自身を含む): 25104384

約数和(自身を除く): 3145007

約数列:

[1, 11, 31, 71, 341, 781, 907, 2201, 9977, 24211, 28117, 64397, 309287, 708367, 1996307, 21959377]

約数ペア:

[(1, 21959377), (11, 1996307), (31, 708367), (71, 309287), (341, 64397), (781, 28117), (907, 24211), (2201, 9977)]