20765415

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{673}}^1$

素因数の和:720

約数の個数: 48

約数和(自身を含む): 38725344

約数和(自身を除く): 17959929

約数列:

[1, 3, 5, 11, 15, 17, 33, 51, 55, 85, 121, 165, 187, 255, 363, 561, 605, 673, 935, 1815, 2019, 2057, 2805, 3365, 6171, 7403, 10095, 10285, 11441, 22209, 30855, 34323, 37015, 57205, 81433, 111045, 125851, 171615, 244299, 377553, 407165, 629255, 1221495, 1384361, 1887765, 4153083, 6921805, 20765415]

約数ペア:

[(1, 20765415), (3, 6921805), (5, 4153083), (11, 1887765), (15, 1384361), (17, 1221495), (33, 629255), (51, 407165), (55, 377553), (85, 244299), (121, 171615), (165, 125851), (187, 111045), (255, 81433), (363, 57205), (561, 37015), (605, 34323), (673, 30855), (935, 22209), (1815, 11441), (2019, 10285), (2057, 10095), (2805, 7403), (3365, 6171)]