129769280

素因数分解:

$2^6\times 5^1\times {\mathrm{405529}}^1$

素因数の和:405546

約数の個数: 28

約数和(自身を含む): 309013860

約数和(自身を除く): 179244580

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 405529, 811058, 1622116, 2027645, 3244232, 4055290, 6488464, 8110580, 12976928, 16221160, 25953856, 32442320, 64884640, 129769280]

約数ペア:

[(1, 129769280), (2, 64884640), (4, 32442320), (5, 25953856), (8, 16221160), (10, 12976928), (16, 8110580), (20, 6488464), (32, 4055290), (40, 3244232), (64, 2027645), (80, 1622116), (160, 811058), (320, 405529)]