641288

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{4219}}^1$

素因数の和:4244

約数の個数: 16

約数和(自身を含む): 1266000

約数和(自身を除く): 624712

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 4219, 8438, 16876, 33752, 80161, 160322, 320644, 641288]

約数ペア:

[(1, 641288), (2, 320644), (4, 160322), (8, 80161), (19, 33752), (38, 16876), (76, 8438), (152, 4219)]