18974711

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{229}}^1$

素因数の和:351

約数の個数: 24

約数和(自身を含む): 23598000

約数和(自身を除く): 4623289

約数列:

[1, 7, 19, 49, 89, 133, 229, 623, 931, 1603, 1691, 4351, 4361, 11221, 11837, 20381, 30457, 82859, 142667, 213199, 387239, 998669, 2710673, 18974711]

約数ペア:

[(1, 18974711), (7, 2710673), (19, 998669), (49, 387239), (89, 213199), (133, 142667), (229, 82859), (623, 30457), (931, 20381), (1603, 11837), (1691, 11221), (4351, 4361)]