20722849

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1$

素因数の和:193

約数の個数: 32

約数和(自身を含む): 26265600

約数和(自身を除く): 5542751

約数列:

[1, 7, 29, 31, 37, 89, 203, 217, 259, 623, 899, 1073, 1147, 2581, 2759, 3293, 6293, 7511, 8029, 18067, 19313, 23051, 33263, 80011, 95497, 102083, 232841, 560077, 668479, 714581, 2960407, 20722849]

約数ペア:

[(1, 20722849), (7, 2960407), (29, 714581), (31, 668479), (37, 560077), (89, 232841), (203, 102083), (217, 95497), (259, 80011), (623, 33263), (899, 23051), (1073, 19313), (1147, 18067), (2581, 8029), (2759, 7511), (3293, 6293)]