20980949

素因数分解:

${\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{739}}^1$

素因数の和:868

約数の個数: 16

約数和(自身を含む): 23976000

約数和(自身を除く): 2995051

約数列:

[1, 11, 29, 89, 319, 739, 979, 2581, 8129, 21431, 28391, 65771, 235741, 723481, 1907359, 20980949]

約数ペア:

[(1, 20980949), (11, 1907359), (29, 723481), (89, 235741), (319, 65771), (739, 28391), (979, 21431), (2581, 8129)]