20365065

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{3803}}^1$

素因数の和:3838

約数の個数: 48

約数和(自身を含む): 42726528

約数和(自身を除く): 22361463

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 35, 45, 51, 63, 85, 105, 119, 153, 255, 315, 357, 595, 765, 1071, 1785, 3803, 5355, 11409, 19015, 26621, 34227, 57045, 64651, 79863, 133105, 171135, 193953, 239589, 323255, 399315, 452557, 581859, 969765, 1197945, 1357671, 2262785, 2909295, 4073013, 6788355, 20365065]

約数ペア:

[(1, 20365065), (3, 6788355), (5, 4073013), (7, 2909295), (9, 2262785), (15, 1357671), (17, 1197945), (21, 969765), (35, 581859), (45, 452557), (51, 399315), (63, 323255), (85, 239589), (105, 193953), (119, 171135), (153, 133105), (255, 79863), (315, 64651), (357, 57045), (595, 34227), (765, 26621), (1071, 19015), (1785, 11409), (3803, 5355)]