21743315

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{20807}}^1$

素因数の和:20842

約数の個数: 16

約数和(自身を含む): 29963520

約数和(自身を除く): 8220205

約数列:

[1, 5, 11, 19, 55, 95, 209, 1045, 20807, 104035, 228877, 395333, 1144385, 1976665, 4348663, 21743315]

約数ペア:

[(1, 21743315), (5, 4348663), (11, 1976665), (19, 1144385), (55, 395333), (95, 228877), (209, 104035), (1045, 20807)]