19990488

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{463}}^1$

素因数の和:736

約数の個数: 64

約数和(自身を含む): 57461760

約数和(自身を除く): 37471272

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168, 257, 463, 514, 771, 926, 1028, 1389, 1542, 1799, 1852, 2056, 2778, 3084, 3241, 3598, 3704, 5397, 5556, 6168, 6482, 7196, 9723, 10794, 11112, 12964, 14392, 19446, 21588, 25928, 38892, 43176, 77784, 118991, 237982, 356973, 475964, 713946, 832937, 951928, 1427892, 1665874, 2498811, 2855784, 3331748, 4997622, 6663496, 9995244, 19990488]

約数ペア:

[(1, 19990488), (2, 9995244), (3, 6663496), (4, 4997622), (6, 3331748), (7, 2855784), (8, 2498811), (12, 1665874), (14, 1427892), (21, 951928), (24, 832937), (28, 713946), (42, 475964), (56, 356973), (84, 237982), (168, 118991), (257, 77784), (463, 43176), (514, 38892), (771, 25928), (926, 21588), (1028, 19446), (1389, 14392), (1542, 12964), (1799, 11112), (1852, 10794), (2056, 9723), (2778, 7196), (3084, 6482), (3241, 6168), (3598, 5556), (3704, 5397)]