21544138

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{199}}^1$

素因数の和:275

約数の個数: 64

約数和(自身を含む): 43776000

約数和(自身を除く): 22231862

約数列:

[1, 2, 7, 11, 14, 19, 22, 37, 38, 74, 77, 133, 154, 199, 209, 259, 266, 398, 407, 418, 518, 703, 814, 1393, 1406, 1463, 2189, 2786, 2849, 2926, 3781, 4378, 4921, 5698, 7363, 7562, 7733, 9842, 14726, 15323, 15466, 26467, 30646, 41591, 51541, 52934, 54131, 80993, 83182, 103082, 108262, 139897, 161986, 279794, 291137, 566951, 582274, 979279, 1133902, 1538867, 1958558, 3077734, 10772069, 21544138]

約数ペア:

[(1, 21544138), (2, 10772069), (7, 3077734), (11, 1958558), (14, 1538867), (19, 1133902), (22, 979279), (37, 582274), (38, 566951), (74, 291137), (77, 279794), (133, 161986), (154, 139897), (199, 108262), (209, 103082), (259, 83182), (266, 80993), (398, 54131), (407, 52934), (418, 51541), (518, 41591), (703, 30646), (814, 26467), (1393, 15466), (1406, 15323), (1463, 14726), (2189, 9842), (2786, 7733), (2849, 7562), (2926, 7363), (3781, 5698), (4378, 4921)]