665890240

素因数分解:

$2^6\times 5^1\times {\mathrm{2080907}}^1$

素因数の和:2080924

約数の個数: 28

約数和(自身を含む): 1585651896

約数和(自身を除く): 919761656

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 2080907, 4161814, 8323628, 10404535, 16647256, 20809070, 33294512, 41618140, 66589024, 83236280, 133178048, 166472560, 332945120, 665890240]

約数ペア:

[(1, 665890240), (2, 332945120), (4, 166472560), (5, 133178048), (8, 83236280), (10, 66589024), (16, 41618140), (20, 33294512), (32, 20809070), (40, 16647256), (64, 10404535), (80, 8323628), (160, 4161814), (320, 2080907)]