208539309

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{257}}^1\times {\mathrm{367}}^1$

素因数の和:705

約数の個数: 32

約数和(自身を含む): 309897216

約数和(自身を除く): 101357907

約数列:

[1, 3, 11, 33, 67, 201, 257, 367, 737, 771, 1101, 2211, 2827, 4037, 8481, 12111, 17219, 24589, 51657, 73767, 94319, 189409, 270479, 282957, 568227, 811437, 1037509, 3112527, 6319373, 18958119, 69513103, 208539309]

約数ペア:

[(1, 208539309), (3, 69513103), (11, 18958119), (33, 6319373), (67, 3112527), (201, 1037509), (257, 811437), (367, 568227), (737, 282957), (771, 270479), (1101, 189409), (2211, 94319), (2827, 73767), (4037, 51657), (8481, 24589), (12111, 17219)]