18347240

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{10667}}^1$

素因数の和:10721

約数の個数: 32

約数和(自身を含む): 42245280

約数和(自身を除く): 23898040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 10667, 21334, 42668, 53335, 85336, 106670, 213340, 426680, 458681, 917362, 1834724, 2293405, 3669448, 4586810, 9173620, 18347240]

約数ペア:

[(1, 18347240), (2, 9173620), (4, 4586810), (5, 3669448), (8, 2293405), (10, 1834724), (20, 917362), (40, 458681), (43, 426680), (86, 213340), (172, 106670), (215, 85336), (344, 53335), (430, 42668), (860, 21334), (1720, 10667)]