20681672

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{1181}}^1$

素因数の和:1397

約数の個数: 32

約数和(自身を含む): 42552000

約数和(自身を除く): 21870328

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 199, 398, 796, 1181, 1592, 2189, 2362, 4378, 4724, 8756, 9448, 12991, 17512, 25982, 51964, 103928, 235019, 470038, 940076, 1880152, 2585209, 5170418, 10340836, 20681672]

約数ペア:

[(1, 20681672), (2, 10340836), (4, 5170418), (8, 2585209), (11, 1880152), (22, 940076), (44, 470038), (88, 235019), (199, 103928), (398, 51964), (796, 25982), (1181, 17512), (1592, 12991), (2189, 9448), (2362, 8756), (4378, 4724)]