18678121

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{751}}^1$

素因数の和:805

約数の個数: 32

約数和(自身を含む): 25989120

約数和(自身を除く): 7310999

約数列:

[1, 7, 11, 17, 19, 77, 119, 133, 187, 209, 323, 751, 1309, 1463, 2261, 3553, 5257, 8261, 12767, 14269, 24871, 57827, 89369, 99883, 140437, 156959, 242573, 983059, 1098713, 1698011, 2668303, 18678121]

約数ペア:

[(1, 18678121), (7, 2668303), (11, 1698011), (17, 1098713), (19, 983059), (77, 242573), (119, 156959), (133, 140437), (187, 99883), (209, 89369), (323, 57827), (751, 24871), (1309, 14269), (1463, 12767), (2261, 8261), (3553, 5257)]