18185811

素因数分解:

$3^1\times 7^2\times {\mathrm{193}}^1\times {\mathrm{641}}^1$

素因数の和:851

約数の個数: 24

約数和(自身を含む): 28396944

約数和(自身を除く): 10211133

約数列:

[1, 3, 7, 21, 49, 147, 193, 579, 641, 1351, 1923, 4053, 4487, 9457, 13461, 28371, 31409, 94227, 123713, 371139, 865991, 2597973, 6061937, 18185811]

約数ペア:

[(1, 18185811), (3, 6061937), (7, 2597973), (21, 865991), (49, 371139), (147, 123713), (193, 94227), (579, 31409), (641, 28371), (1351, 13461), (1923, 9457), (4053, 4487)]