20879271

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{17443}}^1$

素因数の和:17475

約数の個数: 24

約数和(自身を含む): 36283520

約数和(自身を除く): 15404249

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 399, 1197, 17443, 52329, 122101, 156987, 331417, 366303, 994251, 1098909, 2319919, 2982753, 6959757, 20879271]

約数ペア:

[(1, 20879271), (3, 6959757), (7, 2982753), (9, 2319919), (19, 1098909), (21, 994251), (57, 366303), (63, 331417), (133, 156987), (171, 122101), (399, 52329), (1197, 17443)]