20966967

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19577}}^1$

素因数の和:19607

約数の個数: 24

約数和(自身を含む): 36650016

約数和(自身を除く): 15683049

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 153, 357, 1071, 19577, 58731, 137039, 176193, 332809, 411117, 998427, 1233351, 2329663, 2995281, 6988989, 20966967]

約数ペア:

[(1, 20966967), (3, 6988989), (7, 2995281), (9, 2329663), (17, 1233351), (21, 998427), (51, 411117), (63, 332809), (119, 176193), (153, 137039), (357, 58731), (1071, 19577)]