123264640

素因数分解:

$2^7\times 5^1\times {\mathrm{192601}}^1$

素因数の和:192620

約数の個数: 32

約数和(自身を含む): 294681060

約数和(自身を除く): 171416420

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 192601, 385202, 770404, 963005, 1540808, 1926010, 3081616, 3852020, 6163232, 7704040, 12326464, 15408080, 24652928, 30816160, 61632320, 123264640]

約数ペア:

[(1, 123264640), (2, 61632320), (4, 30816160), (5, 24652928), (8, 15408080), (10, 12326464), (16, 7704040), (20, 6163232), (32, 3852020), (40, 3081616), (64, 1926010), (80, 1540808), (128, 963005), (160, 770404), (320, 385202), (640, 192601)]