20955663

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{173}}^1\times {\mathrm{313}}^1$

素因数の和:535

約数の個数: 24

約数和(自身を含む): 31251792

約数和(自身を除く): 10296129

約数列:

[1, 3, 9, 43, 129, 173, 313, 387, 519, 939, 1557, 2817, 7439, 13459, 22317, 40377, 54149, 66951, 121131, 162447, 487341, 2328407, 6985221, 20955663]

約数ペア:

[(1, 20955663), (3, 6985221), (9, 2328407), (43, 487341), (129, 162447), (173, 121131), (313, 66951), (387, 54149), (519, 40377), (939, 22317), (1557, 13459), (2817, 7439)]