8706640

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2531}}^1$

素因数の和:2587

約数の個数: 40

約数和(自身を含む): 20721888

約数和(自身を除く): 12015248

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 2531, 3440, 5062, 10124, 12655, 20248, 25310, 40496, 50620, 101240, 108833, 202480, 217666, 435332, 544165, 870664, 1088330, 1741328, 2176660, 4353320, 8706640]

約数ペア:

[(1, 8706640), (2, 4353320), (4, 2176660), (5, 1741328), (8, 1088330), (10, 870664), (16, 544165), (20, 435332), (40, 217666), (43, 202480), (80, 108833), (86, 101240), (172, 50620), (215, 40496), (344, 25310), (430, 20248), (688, 12655), (860, 10124), (1720, 5062), (2531, 3440)]