20931999

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{7127}}^1$

素因数の和:7230

約数の個数: 16

約数和(自身を含む): 30792960

約数和(自身を除く): 9860961

約数列:

[1, 3, 11, 33, 89, 267, 979, 2937, 7127, 21381, 78397, 235191, 634303, 1902909, 6977333, 20931999]

約数ペア:

[(1, 20931999), (3, 6977333), (11, 1902909), (33, 634303), (89, 235191), (267, 78397), (979, 21381), (2937, 7127)]