1298291211

素因数分解:

$3^2\times 7^2\times {\mathrm{2943971}}^1$

素因数の和:2943991

約数の個数: 18

約数和(自身を含む): 2181483252

約数和(自身を除く): 883192041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 2943971, 8831913, 20607797, 26495739, 61823391, 144254579, 185470173, 432763737, 1298291211]

約数ペア:

[(1, 1298291211), (3, 432763737), (7, 185470173), (9, 144254579), (21, 61823391), (49, 26495739), (63, 20607797), (147, 8831913), (441, 2943971)]