619038721

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^2\times {\mathrm{4001}}^1$

素因数の和:4093

約数の個数: 24

約数和(自身を含む): 763005312

約数和(自身を除く): 143966591

約数列:

[1, 7, 23, 31, 161, 217, 713, 961, 4001, 4991, 6727, 22103, 28007, 92023, 124031, 154721, 644161, 868217, 2852713, 3844961, 19968991, 26914727, 88434103, 619038721]

約数ペア:

[(1, 619038721), (7, 88434103), (23, 26914727), (31, 19968991), (161, 3844961), (217, 2852713), (713, 868217), (961, 644161), (4001, 154721), (4991, 124031), (6727, 92023), (22103, 28007)]