21047288

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{138469}}^1$

素因数の和:138494

約数の個数: 16

約数和(自身を含む): 41541000

約数和(自身を除く): 20493712

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 138469, 276938, 553876, 1107752, 2630911, 5261822, 10523644, 21047288]

約数ペア:

[(1, 21047288), (2, 10523644), (4, 5261822), (8, 2630911), (19, 1107752), (38, 553876), (76, 276938), (152, 138469)]