18330040

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{10657}}^1$

素因数の和:10711

約数の個数: 32

約数和(自身を含む): 42205680

約数和(自身を除く): 23875640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 10657, 21314, 42628, 53285, 85256, 106570, 213140, 426280, 458251, 916502, 1833004, 2291255, 3666008, 4582510, 9165020, 18330040]

約数ペア:

[(1, 18330040), (2, 9165020), (4, 4582510), (5, 3666008), (8, 2291255), (10, 1833004), (20, 916502), (40, 458251), (43, 426280), (86, 213140), (172, 106570), (215, 85256), (344, 53285), (430, 42628), (860, 21314), (1720, 10657)]