20883939

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{107}}^1$

素因数の和:259

約数の個数: 32

約数和(自身を含む): 30792960

約数和(自身を除く): 9909021

約数列:

[1, 3, 17, 43, 51, 89, 107, 129, 267, 321, 731, 1513, 1819, 2193, 3827, 4539, 4601, 5457, 9523, 11481, 13803, 28569, 65059, 78217, 161891, 195177, 234651, 409489, 485673, 1228467, 6961313, 20883939]

約数ペア:

[(1, 20883939), (3, 6961313), (17, 1228467), (43, 485673), (51, 409489), (89, 234651), (107, 195177), (129, 161891), (267, 78217), (321, 65059), (731, 28569), (1513, 13803), (1819, 11481), (2193, 9523), (3827, 5457), (4539, 4601)]