20565404139

素因数分解:

$3^1\times 7^1\times {\mathrm{263}}^1\times {\mathrm{3723593}}^1$

素因数の和:3723866

約数の個数: 16

約数和(自身を含む): 31456922112

約数和(自身を除く): 10891517973

約数列:

[1, 3, 7, 21, 263, 789, 1841, 5523, 3723593, 11170779, 26065151, 78195453, 979304959, 2937914877, 6855134713, 20565404139]

約数ペア:

[(1, 20565404139), (3, 6855134713), (7, 2937914877), (21, 979304959), (263, 78195453), (789, 26065151), (1841, 11170779), (5523, 3723593)]