21131132

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{7873}}^1$

素因数の和:7949

約数の個数: 24

約数和(自身を含む): 41007792

約数和(自身を除く): 19876660

約数列:

[1, 2, 4, 11, 22, 44, 61, 122, 244, 671, 1342, 2684, 7873, 15746, 31492, 86603, 173206, 346412, 480253, 960506, 1921012, 5282783, 10565566, 21131132]

約数ペア:

[(1, 21131132), (2, 10565566), (4, 5282783), (11, 1921012), (22, 960506), (44, 480253), (61, 346412), (122, 173206), (244, 86603), (671, 31492), (1342, 15746), (2684, 7873)]