21509556

素因数分解:

$2^2\times 3^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{1087}}^1$

素因数の和:1208

約数の個数: 48

約数和(自身を含む): 53738496

約数和(自身を除く): 32228940

約数列:

[1, 2, 3, 4, 6, 12, 17, 34, 51, 68, 97, 102, 194, 204, 291, 388, 582, 1087, 1164, 1649, 2174, 3261, 3298, 4348, 4947, 6522, 6596, 9894, 13044, 18479, 19788, 36958, 55437, 73916, 105439, 110874, 210878, 221748, 316317, 421756, 632634, 1265268, 1792463, 3584926, 5377389, 7169852, 10754778, 21509556]

約数ペア:

[(1, 21509556), (2, 10754778), (3, 7169852), (4, 5377389), (6, 3584926), (12, 1792463), (17, 1265268), (34, 632634), (51, 421756), (68, 316317), (97, 221748), (102, 210878), (194, 110874), (204, 105439), (291, 73916), (388, 55437), (582, 36958), (1087, 19788), (1164, 18479), (1649, 13044), (2174, 9894), (3261, 6596), (3298, 6522), (4348, 4947)]