639883978

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{3613}}^1\times {\mathrm{5209}}^1$

素因数の和:8841

約数の個数: 16

約数和(自身を含む): 1016762760

約数和(自身を除く): 376878782

約数列:

[1, 2, 17, 34, 3613, 5209, 7226, 10418, 61421, 88553, 122842, 177106, 18820117, 37640234, 319941989, 639883978]

約数ペア:

[(1, 639883978), (2, 319941989), (17, 37640234), (34, 18820117), (3613, 177106), (5209, 122842), (7226, 88553), (10418, 61421)]