21898737

素因数分解:

$3^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1$

素因数の和:187

約数の個数: 72

約数和(自身を含む): 40974336

約数和(自身を除く): 19075599

約数列:

[1, 3, 7, 9, 17, 21, 23, 49, 51, 63, 69, 119, 127, 147, 153, 161, 207, 357, 381, 391, 441, 483, 833, 889, 1071, 1127, 1143, 1173, 1449, 2159, 2499, 2667, 2737, 2921, 3381, 3519, 6223, 6477, 7497, 8001, 8211, 8763, 10143, 15113, 18669, 19159, 19431, 20447, 24633, 26289, 45339, 49657, 56007, 57477, 61341, 105791, 136017, 143129, 148971, 172431, 184023, 317373, 347599, 429387, 446913, 952119, 1042797, 1288161, 2433193, 3128391, 7299579, 21898737]

約数ペア:

[(1, 21898737), (3, 7299579), (7, 3128391), (9, 2433193), (17, 1288161), (21, 1042797), (23, 952119), (49, 446913), (51, 429387), (63, 347599), (69, 317373), (119, 184023), (127, 172431), (147, 148971), (153, 143129), (161, 136017), (207, 105791), (357, 61341), (381, 57477), (391, 56007), (441, 49657), (483, 45339), (833, 26289), (889, 24633), (1071, 20447), (1127, 19431), (1143, 19159), (1173, 18669), (1449, 15113), (2159, 10143), (2499, 8763), (2667, 8211), (2737, 8001), (2921, 7497), (3381, 6477), (3519, 6223)]