21069004

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{101}}^1\times {\mathrm{431}}^1$

素因数の和:558

約数の個数: 36

約数和(自身を含む): 41023584

約数和(自身を除く): 19954580

約数列:

[1, 2, 4, 11, 22, 44, 101, 121, 202, 242, 404, 431, 484, 862, 1111, 1724, 2222, 4444, 4741, 9482, 12221, 18964, 24442, 43531, 48884, 52151, 87062, 104302, 174124, 208604, 478841, 957682, 1915364, 5267251, 10534502, 21069004]

約数ペア:

[(1, 21069004), (2, 10534502), (4, 5267251), (11, 1915364), (22, 957682), (44, 478841), (101, 208604), (121, 174124), (202, 104302), (242, 87062), (404, 52151), (431, 48884), (484, 43531), (862, 24442), (1111, 18964), (1724, 12221), (2222, 9482), (4444, 4741)]