21405989

素因数分解:

${\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{9311}}^1$

素因数の和:9352

約数の個数: 12

約数和(自身を含む): 24769920

約数和(自身を除く): 3363931

約数列:

[1, 11, 19, 121, 209, 2299, 9311, 102421, 176909, 1126631, 1945999, 21405989]

約数ペア:

[(1, 21405989), (11, 1945999), (19, 1126631), (121, 176909), (209, 102421), (2299, 9311)]