20948165

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{109}}^1$

素因数の和:174

約数の個数: 48

約数和(自身を含む): 32419200

約数和(自身を除く): 11471035

約数列:

[1, 5, 7, 17, 19, 35, 85, 95, 109, 119, 133, 289, 323, 545, 595, 665, 763, 1445, 1615, 1853, 2023, 2071, 2261, 3815, 5491, 9265, 10115, 10355, 11305, 12971, 14497, 27455, 31501, 35207, 38437, 64855, 72485, 157505, 176035, 192185, 220507, 246449, 598519, 1102535, 1232245, 2992595, 4189633, 20948165]

約数ペア:

[(1, 20948165), (5, 4189633), (7, 2992595), (17, 1232245), (19, 1102535), (35, 598519), (85, 246449), (95, 220507), (109, 192185), (119, 176035), (133, 157505), (289, 72485), (323, 64855), (545, 38437), (595, 35207), (665, 31501), (763, 27455), (1445, 14497), (1615, 12971), (1853, 11305), (2023, 10355), (2071, 10115), (2261, 9265), (3815, 5491)]