394253240

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{229217}}^1$

素因数の和:229271

約数の個数: 32

約数和(自身を含む): 907703280

約数和(自身を除く): 513450040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 229217, 458434, 916868, 1146085, 1833736, 2292170, 4584340, 9168680, 9856331, 19712662, 39425324, 49281655, 78850648, 98563310, 197126620, 394253240]

約数ペア:

[(1, 394253240), (2, 197126620), (4, 98563310), (5, 78850648), (8, 49281655), (10, 39425324), (20, 19712662), (40, 9856331), (43, 9168680), (86, 4584340), (172, 2292170), (215, 1833736), (344, 1146085), (430, 916868), (860, 458434), (1720, 229217)]