638599766

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{32887}}^1$

素因数の和:32988

約数の個数: 32

約数和(自身を含む): 1168181760

約数和(自身を除く): 529581994

約数列:

[1, 2, 7, 14, 19, 38, 73, 133, 146, 266, 511, 1022, 1387, 2774, 9709, 19418, 32887, 65774, 230209, 460418, 624853, 1249706, 2400751, 4373971, 4801502, 8747942, 16805257, 33610514, 45614269, 91228538, 319299883, 638599766]

約数ペア:

[(1, 638599766), (2, 319299883), (7, 91228538), (14, 45614269), (19, 33610514), (38, 16805257), (73, 8747942), (133, 4801502), (146, 4373971), (266, 2400751), (511, 1249706), (1022, 624853), (1387, 460418), (2774, 230209), (9709, 65774), (19418, 32887)]