21224995

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{1069}}^1$

素因数の和:1123

約数の個数: 24

約数和(自身を含む): 29352240

約数和(自身を除く): 8127245

約数列:

[1, 5, 11, 19, 55, 95, 209, 361, 1045, 1069, 1805, 3971, 5345, 11759, 19855, 20311, 58795, 101555, 223421, 385909, 1117105, 1929545, 4244999, 21224995]

約数ペア:

[(1, 21224995), (5, 4244999), (11, 1929545), (19, 1117105), (55, 385909), (95, 223421), (209, 101555), (361, 58795), (1045, 20311), (1069, 19855), (1805, 11759), (3971, 5345)]