20897961

素因数分解:

$3^1\times 7^3\times {\mathrm{23}}^1\times {\mathrm{883}}^1$

素因数の和:930

約数の個数: 32

約数和(自身を含む): 33945600

約数和(自身を除く): 13047639

約数列:

[1, 3, 7, 21, 23, 49, 69, 147, 161, 343, 483, 883, 1029, 1127, 2649, 3381, 6181, 7889, 18543, 20309, 23667, 43267, 60927, 129801, 142163, 302869, 426489, 908607, 995141, 2985423, 6965987, 20897961]

約数ペア:

[(1, 20897961), (3, 6965987), (7, 2985423), (21, 995141), (23, 908607), (49, 426489), (69, 302869), (147, 142163), (161, 129801), (343, 60927), (483, 43267), (883, 23667), (1029, 20309), (1127, 18543), (2649, 7889), (3381, 6181)]