6642640

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1931}}^1$

素因数の和:1987

約数の個数: 40

約数和(自身を含む): 15811488

約数和(自身を除く): 9168848

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 1931, 3440, 3862, 7724, 9655, 15448, 19310, 30896, 38620, 77240, 83033, 154480, 166066, 332132, 415165, 664264, 830330, 1328528, 1660660, 3321320, 6642640]

約数ペア:

[(1, 6642640), (2, 3321320), (4, 1660660), (5, 1328528), (8, 830330), (10, 664264), (16, 415165), (20, 332132), (40, 166066), (43, 154480), (80, 83033), (86, 77240), (172, 38620), (215, 30896), (344, 19310), (430, 15448), (688, 9655), (860, 7724), (1720, 3862), (1931, 3440)]