21993280

素因数分解:

$2^6\times 5^1\times {\mathrm{68729}}^1$

素因数の和:68746

約数の個数: 28

約数和(自身を含む): 52372260

約数和(自身を除く): 30378980

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 68729, 137458, 274916, 343645, 549832, 687290, 1099664, 1374580, 2199328, 2749160, 4398656, 5498320, 10996640, 21993280]

約数ペア:

[(1, 21993280), (2, 10996640), (4, 5498320), (5, 4398656), (8, 2749160), (10, 2199328), (16, 1374580), (20, 1099664), (32, 687290), (40, 549832), (64, 343645), (80, 274916), (160, 137458), (320, 68729)]