64786780

素因数分解:

$2^2\times 5^1\times {\mathrm{1499}}^1\times {\mathrm{2161}}^1$

素因数の和:3669

約数の個数: 24

約数和(自身を含む): 136206000

約数和(自身を除く): 71419220

約数列:

[1, 2, 4, 5, 10, 20, 1499, 2161, 2998, 4322, 5996, 7495, 8644, 10805, 14990, 21610, 29980, 43220, 3239339, 6478678, 12957356, 16196695, 32393390, 64786780]

約数ペア:

[(1, 64786780), (2, 32393390), (4, 16196695), (5, 12957356), (10, 6478678), (20, 3239339), (1499, 43220), (2161, 29980), (2998, 21610), (4322, 14990), (5996, 10805), (7495, 8644)]