21377125

素因数分解:

$5^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{2221}}^1$

素因数の和:2254

約数の個数: 32

約数和(自身を含む): 33276672

約数和(自身を除く): 11899547

約数列:

[1, 5, 7, 11, 25, 35, 55, 77, 125, 175, 275, 385, 875, 1375, 1925, 2221, 9625, 11105, 15547, 24431, 55525, 77735, 122155, 171017, 277625, 388675, 610775, 855085, 1943375, 3053875, 4275425, 21377125]

約数ペア:

[(1, 21377125), (5, 4275425), (7, 3053875), (11, 1943375), (25, 855085), (35, 610775), (55, 388675), (77, 277625), (125, 171017), (175, 122155), (275, 77735), (385, 55525), (875, 24431), (1375, 15547), (1925, 11105), (2221, 9625)]