20197953

素因数分解:

$3^2\times {\mathrm{41}}^1\times {\mathrm{127}}^1\times {\mathrm{431}}^1$

素因数の和:605

約数の個数: 24

約数和(自身を含む): 30191616

約数和(自身を除く): 9993663

約数列:

[1, 3, 9, 41, 123, 127, 369, 381, 431, 1143, 1293, 3879, 5207, 15621, 17671, 46863, 53013, 54737, 159039, 164211, 492633, 2244217, 6732651, 20197953]

約数ペア:

[(1, 20197953), (3, 6732651), (9, 2244217), (41, 492633), (123, 164211), (127, 159039), (369, 54737), (381, 53013), (431, 46863), (1143, 17671), (1293, 15621), (3879, 5207)]