2170640

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{631}}^1$

素因数の和:687

約数の個数: 40

約数和(自身を含む): 5172288

約数和(自身を除く): 3001648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 631, 688, 860, 1262, 1720, 2524, 3155, 3440, 5048, 6310, 10096, 12620, 25240, 27133, 50480, 54266, 108532, 135665, 217064, 271330, 434128, 542660, 1085320, 2170640]

約数ペア:

[(1, 2170640), (2, 1085320), (4, 542660), (5, 434128), (8, 271330), (10, 217064), (16, 135665), (20, 108532), (40, 54266), (43, 50480), (80, 27133), (86, 25240), (172, 12620), (215, 10096), (344, 6310), (430, 5048), (631, 3440), (688, 3155), (860, 2524), (1262, 1720)]