21131559928

素因数分解:

$2^3\times {\mathrm{103}}^1\times {\mathrm{353}}^1\times {\mathrm{72649}}^1$

素因数の和:73111

約数の個数: 32

約数和(自身を含む): 40120236000

約数和(自身を除く): 18988676072

約数列:

[1, 2, 4, 8, 103, 206, 353, 412, 706, 824, 1412, 2824, 36359, 72649, 72718, 145298, 145436, 290596, 290872, 581192, 7482847, 14965694, 25645097, 29931388, 51290194, 59862776, 102580388, 205160776, 2641444991, 5282889982, 10565779964, 21131559928]

約数ペア:

[(1, 21131559928), (2, 10565779964), (4, 5282889982), (8, 2641444991), (103, 205160776), (206, 102580388), (353, 59862776), (412, 51290194), (706, 29931388), (824, 25645097), (1412, 14965694), (2824, 7482847), (36359, 581192), (72649, 290872), (72718, 290596), (145298, 145436)]