289783760

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{517471}}^1$

素因数の和:517491

約数の個数: 40

約数和(自身を含む): 769998336

約数和(自身を除く): 480214576

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 517471, 1034942, 2069884, 2587355, 3622297, 4139768, 5174710, 7244594, 8279536, 10349420, 14489188, 18111485, 20698840, 28978376, 36222970, 41397680, 57956752, 72445940, 144891880, 289783760]

約数ペア:

[(1, 289783760), (2, 144891880), (4, 72445940), (5, 57956752), (7, 41397680), (8, 36222970), (10, 28978376), (14, 20698840), (16, 18111485), (20, 14489188), (28, 10349420), (35, 8279536), (40, 7244594), (56, 5174710), (70, 4139768), (80, 3622297), (112, 2587355), (140, 2069884), (280, 1034942), (560, 517471)]