129417280

素因数分解:

$2^6\times 5^1\times {\mathrm{404429}}^1$

素因数の和:404446

約数の個数: 28

約数和(自身を含む): 308175660

約数和(自身を除く): 178758380

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 404429, 808858, 1617716, 2022145, 3235432, 4044290, 6470864, 8088580, 12941728, 16177160, 25883456, 32354320, 64708640, 129417280]

約数ペア:

[(1, 129417280), (2, 64708640), (4, 32354320), (5, 25883456), (8, 16177160), (10, 12941728), (16, 8088580), (20, 6470864), (32, 4044290), (40, 3235432), (64, 2022145), (80, 1617716), (160, 808858), (320, 404429)]