21356181

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{30817}}^1$

素因数の和:30841

約数の個数: 24

約数和(自身を含む): 38460864

約数和(自身を除く): 17104683

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 231, 693, 30817, 92451, 215719, 277353, 338987, 647157, 1016961, 1941471, 2372909, 3050883, 7118727, 21356181]

約数ペア:

[(1, 21356181), (3, 7118727), (7, 3050883), (9, 2372909), (11, 1941471), (21, 1016961), (33, 647157), (63, 338987), (77, 277353), (99, 215719), (231, 92451), (693, 30817)]