780168640

素因数分解:

$2^6\times 5^1\times {\mathrm{2438027}}^1$

素因数の和:2438044

約数の個数: 28

約数和(自身を含む): 1857777336

約数和(自身を除く): 1077608696

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 2438027, 4876054, 9752108, 12190135, 19504216, 24380270, 39008432, 48760540, 78016864, 97521080, 156033728, 195042160, 390084320, 780168640]

約数ペア:

[(1, 780168640), (2, 390084320), (4, 195042160), (5, 156033728), (8, 97521080), (10, 78016864), (16, 48760540), (20, 39008432), (32, 24380270), (40, 19504216), (64, 12190135), (80, 9752108), (160, 4876054), (320, 2438027)]