19928656

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{569}}^1$

素因数の和:787

約数の個数: 40

約数和(自身を含む): 42408000

約数和(自身を除く): 22479344

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 199, 398, 569, 796, 1138, 1592, 2189, 2276, 3184, 4378, 4552, 6259, 8756, 9104, 12518, 17512, 25036, 35024, 50072, 100144, 113231, 226462, 452924, 905848, 1245541, 1811696, 2491082, 4982164, 9964328, 19928656]

約数ペア:

[(1, 19928656), (2, 9964328), (4, 4982164), (8, 2491082), (11, 1811696), (16, 1245541), (22, 905848), (44, 452924), (88, 226462), (176, 113231), (199, 100144), (398, 50072), (569, 35024), (796, 25036), (1138, 17512), (1592, 12518), (2189, 9104), (2276, 8756), (3184, 6259), (4378, 4552)]