19722440

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{4787}}^1$

素因数の和:4901

約数の個数: 32

約数和(自身を含む): 44815680

約数和(自身を除く): 25093240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 4787, 9574, 19148, 23935, 38296, 47870, 95740, 191480, 493061, 986122, 1972244, 2465305, 3944488, 4930610, 9861220, 19722440]

約数ペア:

[(1, 19722440), (2, 9861220), (4, 4930610), (5, 3944488), (8, 2465305), (10, 1972244), (20, 986122), (40, 493061), (103, 191480), (206, 95740), (412, 47870), (515, 38296), (824, 23935), (1030, 19148), (2060, 9574), (4120, 4787)]