25441640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{90863}}^1$

素因数の和:90881

約数の個数: 32

約数和(自身を含む): 65422080

約数和(自身を除く): 39980440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 90863, 181726, 363452, 454315, 636041, 726904, 908630, 1272082, 1817260, 2544164, 3180205, 3634520, 5088328, 6360410, 12720820, 25441640]

約数ペア:

[(1, 25441640), (2, 12720820), (4, 6360410), (5, 5088328), (7, 3634520), (8, 3180205), (10, 2544164), (14, 1817260), (20, 1272082), (28, 908630), (35, 726904), (40, 636041), (56, 454315), (70, 363452), (140, 181726), (280, 90863)]