20816158

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{223}}^1\times {\mathrm{4243}}^1$

素因数の和:4479

約数の個数: 16

約数和(自身を含む): 34223616

約数和(自身を除く): 13407458

約数列:

[1, 2, 11, 22, 223, 446, 2453, 4243, 4906, 8486, 46673, 93346, 946189, 1892378, 10408079, 20816158]

約数ペア:

[(1, 20816158), (2, 10408079), (11, 1892378), (22, 946189), (223, 93346), (446, 46673), (2453, 8486), (4243, 4906)]