20975745

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{1867}}^1$

素因数の和:1989

約数の個数: 32

約数和(自身を含む): 38734848

約数和(自身を除く): 17759103

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 107, 321, 535, 749, 1605, 1867, 2247, 3745, 5601, 9335, 11235, 13069, 28005, 39207, 65345, 196035, 199769, 599307, 998845, 1398383, 2996535, 4195149, 6991915, 20975745]

約数ペア:

[(1, 20975745), (3, 6991915), (5, 4195149), (7, 2996535), (15, 1398383), (21, 998845), (35, 599307), (105, 199769), (107, 196035), (321, 65345), (535, 39207), (749, 28005), (1605, 13069), (1867, 11235), (2247, 9335), (3745, 5601)]