21049367092

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{31138117}}^1$

素因数の和:31138147

約数の個数: 18

約数和(自身を含む): 39887929158

約数和(自身を除く): 18838562066

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 31138117, 62276234, 124552468, 404795521, 809591042, 1619182084, 5262341773, 10524683546, 21049367092]

約数ペア:

[(1, 21049367092), (2, 10524683546), (4, 5262341773), (13, 1619182084), (26, 809591042), (52, 404795521), (169, 124552468), (338, 62276234), (676, 31138117)]