21402073

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{673}}^1$

素因数の和:757

約数の個数: 24

約数和(自身を含む): 27660960

約数和(自身を除く): 6258887

約数列:

[1, 7, 11, 49, 59, 77, 413, 539, 649, 673, 2891, 4543, 4711, 7403, 31801, 32977, 39707, 51821, 277949, 362747, 436777, 1945643, 3057439, 21402073]

約数ペア:

[(1, 21402073), (7, 3057439), (11, 1945643), (49, 436777), (59, 362747), (77, 277949), (413, 51821), (539, 39707), (649, 32977), (673, 31801), (2891, 7403), (4543, 4711)]