21740480

素因数分解:

$2^6\times 5^1\times {\mathrm{67939}}^1$

素因数の和:67956

約数の個数: 28

約数和(自身を含む): 51770280

約数和(自身を除く): 30029800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 67939, 135878, 271756, 339695, 543512, 679390, 1087024, 1358780, 2174048, 2717560, 4348096, 5435120, 10870240, 21740480]

約数ペア:

[(1, 21740480), (2, 10870240), (4, 5435120), (5, 4348096), (8, 2717560), (10, 2174048), (16, 1358780), (20, 1087024), (32, 679390), (40, 543512), (64, 339695), (80, 271756), (160, 135878), (320, 67939)]