127864640

素因数分解:

$2^6\times 5^1\times {\mathrm{399577}}^1$

素因数の和:399594

約数の個数: 28

約数和(自身を含む): 304478436

約数和(自身を除く): 176613796

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 399577, 799154, 1598308, 1997885, 3196616, 3995770, 6393232, 7991540, 12786464, 15983080, 25572928, 31966160, 63932320, 127864640]

約数ペア:

[(1, 127864640), (2, 63932320), (4, 31966160), (5, 25572928), (8, 15983080), (10, 12786464), (16, 7991540), (20, 6393232), (32, 3995770), (40, 3196616), (64, 1997885), (80, 1598308), (160, 799154), (320, 399577)]