1138640

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{331}}^1$

素因数の和:387

約数の個数: 40

約数和(自身を含む): 2717088

約数和(自身を除く): 1578448

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 331, 344, 430, 662, 688, 860, 1324, 1655, 1720, 2648, 3310, 3440, 5296, 6620, 13240, 14233, 26480, 28466, 56932, 71165, 113864, 142330, 227728, 284660, 569320, 1138640]

約数ペア:

[(1, 1138640), (2, 569320), (4, 284660), (5, 227728), (8, 142330), (10, 113864), (16, 71165), (20, 56932), (40, 28466), (43, 26480), (80, 14233), (86, 13240), (172, 6620), (215, 5296), (331, 3440), (344, 3310), (430, 2648), (662, 1720), (688, 1655), (860, 1324)]