21847329

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{20399}}^1$

素因数の和:20429

約数の個数: 24

約数和(自身を含む): 38188800

約数和(自身を除く): 16341471

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 153, 357, 1071, 20399, 61197, 142793, 183591, 346783, 428379, 1040349, 1285137, 2427481, 3121047, 7282443, 21847329]

約数ペア:

[(1, 21847329), (3, 7282443), (7, 3121047), (9, 2427481), (17, 1285137), (21, 1040349), (51, 428379), (63, 346783), (119, 183591), (153, 142793), (357, 61197), (1071, 20399)]