20711405

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{349}}^1$

素因数の和:461

約数の個数: 32

約数和(自身を含む): 29635200

約数和(自身を除く): 8923795

約数列:

[1, 5, 11, 13, 55, 65, 83, 143, 349, 415, 715, 913, 1079, 1745, 3839, 4537, 4565, 5395, 11869, 19195, 22685, 28967, 49907, 59345, 144835, 249535, 318637, 376571, 1593185, 1882855, 4142281, 20711405]

約数ペア:

[(1, 20711405), (5, 4142281), (11, 1882855), (13, 1593185), (55, 376571), (65, 318637), (83, 249535), (143, 144835), (349, 59345), (415, 49907), (715, 28967), (913, 22685), (1079, 19195), (1745, 11869), (3839, 5395), (4537, 4565)]