201720728

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{11519}}^1$

素因数の和:11735

約数の個数: 32

約数和(自身を含む): 414720000

約数和(自身を除く): 212999272

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 199, 398, 796, 1592, 2189, 4378, 8756, 11519, 17512, 23038, 46076, 92152, 126709, 253418, 506836, 1013672, 2292281, 4584562, 9169124, 18338248, 25215091, 50430182, 100860364, 201720728]

約数ペア:

[(1, 201720728), (2, 100860364), (4, 50430182), (8, 25215091), (11, 18338248), (22, 9169124), (44, 4584562), (88, 2292281), (199, 1013672), (398, 506836), (796, 253418), (1592, 126709), (2189, 92152), (4378, 46076), (8756, 23038), (11519, 17512)]