28237240

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{16417}}^1$

素因数の和:16471

約数の個数: 32

約数和(自身を含む): 65015280

約数和(自身を除く): 36778040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 16417, 32834, 65668, 82085, 131336, 164170, 328340, 656680, 705931, 1411862, 2823724, 3529655, 5647448, 7059310, 14118620, 28237240]

約数ペア:

[(1, 28237240), (2, 14118620), (4, 7059310), (5, 5647448), (8, 3529655), (10, 2823724), (20, 1411862), (40, 705931), (43, 656680), (86, 328340), (172, 164170), (215, 131336), (344, 82085), (430, 65668), (860, 32834), (1720, 16417)]