12490640

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{3631}}^1$

素因数の和:3687

約数の個数: 40

約数和(自身を含む): 29724288

約数和(自身を除く): 17233648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 3631, 7262, 14524, 18155, 29048, 36310, 58096, 72620, 145240, 156133, 290480, 312266, 624532, 780665, 1249064, 1561330, 2498128, 3122660, 6245320, 12490640]

約数ペア:

[(1, 12490640), (2, 6245320), (4, 3122660), (5, 2498128), (8, 1561330), (10, 1249064), (16, 780665), (20, 624532), (40, 312266), (43, 290480), (80, 156133), (86, 145240), (172, 72620), (215, 58096), (344, 36310), (430, 29048), (688, 18155), (860, 14524), (1720, 7262), (3440, 3631)]