21136864

素因数分解:

$2^5\times 7^1\times {\mathrm{127}}^1\times {\mathrm{743}}^1$

素因数の和:887

約数の個数: 48

約数和(自身を含む): 47996928

約数和(自身を除く): 26860064

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 127, 224, 254, 508, 743, 889, 1016, 1486, 1778, 2032, 2972, 3556, 4064, 5201, 5944, 7112, 10402, 11888, 14224, 20804, 23776, 28448, 41608, 83216, 94361, 166432, 188722, 377444, 660527, 754888, 1321054, 1509776, 2642108, 3019552, 5284216, 10568432, 21136864]

約数ペア:

[(1, 21136864), (2, 10568432), (4, 5284216), (7, 3019552), (8, 2642108), (14, 1509776), (16, 1321054), (28, 754888), (32, 660527), (56, 377444), (112, 188722), (127, 166432), (224, 94361), (254, 83216), (508, 41608), (743, 28448), (889, 23776), (1016, 20804), (1486, 14224), (1778, 11888), (2032, 10402), (2972, 7112), (3556, 5944), (4064, 5201)]