80946640

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{23531}}^1$

素因数の和:23587

約数の個数: 40

約数和(自身を含む): 192585888

約数和(自身を除く): 111639248

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 23531, 47062, 94124, 117655, 188248, 235310, 376496, 470620, 941240, 1011833, 1882480, 2023666, 4047332, 5059165, 8094664, 10118330, 16189328, 20236660, 40473320, 80946640]

約数ペア:

[(1, 80946640), (2, 40473320), (4, 20236660), (5, 16189328), (8, 10118330), (10, 8094664), (16, 5059165), (20, 4047332), (40, 2023666), (43, 1882480), (80, 1011833), (86, 941240), (172, 470620), (215, 376496), (344, 235310), (430, 188248), (688, 117655), (860, 94124), (1720, 47062), (3440, 23531)]