7929621

素因数分解:

$3^2\times 7^2\times {\mathrm{17981}}^1$

素因数の和:18001

約数の個数: 18

約数和(自身を含む): 13324662

約数和(自身を除く): 5395041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 17981, 53943, 125867, 161829, 377601, 881069, 1132803, 2643207, 7929621]

約数ペア:

[(1, 7929621), (3, 2643207), (7, 1132803), (9, 881069), (21, 377601), (49, 161829), (63, 125867), (147, 53943), (441, 17981)]