16990883

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{317}}^1$

素因数の和:387

約数の個数: 32

約数和(自身を含む): 22794240

約数和(自身を除く): 5803357

約数列:

[1, 7, 13, 19, 31, 91, 133, 217, 247, 317, 403, 589, 1729, 2219, 2821, 4121, 4123, 6023, 7657, 9827, 28847, 42161, 53599, 68789, 78299, 127751, 186713, 548093, 894257, 1306991, 2427269, 16990883]

約数ペア:

[(1, 16990883), (7, 2427269), (13, 1306991), (19, 894257), (31, 548093), (91, 186713), (133, 127751), (217, 78299), (247, 68789), (317, 53599), (403, 42161), (589, 28847), (1729, 9827), (2219, 7657), (2821, 6023), (4121, 4123)]