18223639

素因数分解:

$7^2\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{193}}^1$

素因数の和:295

約数の個数: 24

約数和(自身を含む): 22292928

約数和(自身を除く): 4069289

約数列:

[1, 7, 41, 47, 49, 193, 287, 329, 1351, 1927, 2009, 2303, 7913, 9071, 9457, 13489, 55391, 63497, 94423, 371911, 387737, 444479, 2603377, 18223639]

約数ペア:

[(1, 18223639), (7, 2603377), (41, 444479), (47, 387737), (49, 371911), (193, 94423), (287, 63497), (329, 55391), (1351, 13489), (1927, 9457), (2009, 9071), (2303, 7913)]