18765040

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{4787}}^1$

素因数の和:4814

約数の個数: 60

約数和(自身を含む): 50762376

約数和(自身を除く): 31997336

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 4787, 9574, 19148, 23935, 33509, 38296, 47870, 67018, 76592, 95740, 134036, 167545, 191480, 234563, 268072, 335090, 382960, 469126, 536144, 670180, 938252, 1172815, 1340360, 1876504, 2345630, 2680720, 3753008, 4691260, 9382520, 18765040]

約数ペア:

[(1, 18765040), (2, 9382520), (4, 4691260), (5, 3753008), (7, 2680720), (8, 2345630), (10, 1876504), (14, 1340360), (16, 1172815), (20, 938252), (28, 670180), (35, 536144), (40, 469126), (49, 382960), (56, 335090), (70, 268072), (80, 234563), (98, 191480), (112, 167545), (140, 134036), (196, 95740), (245, 76592), (280, 67018), (392, 47870), (490, 38296), (560, 33509), (784, 23935), (980, 19148), (1960, 9574), (3920, 4787)]