666600640

素因数分解:

$2^6\times 5^1\times {\mathrm{2083127}}^1$

素因数の和:2083144

約数の個数: 28

約数和(自身を含む): 1587343536

約数和(自身を除く): 920742896

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 2083127, 4166254, 8332508, 10415635, 16665016, 20831270, 33330032, 41662540, 66660064, 83325080, 133320128, 166650160, 333300320, 666600640]

約数ペア:

[(1, 666600640), (2, 333300320), (4, 166650160), (5, 133320128), (8, 83325080), (10, 66660064), (16, 41662540), (20, 33330032), (32, 20831270), (40, 16665016), (64, 10415635), (80, 8332508), (160, 4166254), (320, 2083127)]