51916240

素因数分解:

$2^4\times 5^1\times {\mathrm{648953}}^1$

素因数の和:648966

約数の個数: 20

約数和(自身を含む): 120705444

約数和(自身を除く): 68789204

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 648953, 1297906, 2595812, 3244765, 5191624, 6489530, 10383248, 12979060, 25958120, 51916240]

約数ペア:

[(1, 51916240), (2, 25958120), (4, 12979060), (5, 10383248), (8, 6489530), (10, 5191624), (16, 3244765), (20, 2595812), (40, 1297906), (80, 648953)]