21271437

素因数分解:

$3^3\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{383}}^1$

素因数の和:431

約数の個数: 48

約数和(自身を含む): 36771840

約数和(自身を除く): 15500403

約数列:

[1, 3, 9, 11, 17, 27, 33, 51, 99, 121, 153, 187, 297, 363, 383, 459, 561, 1089, 1149, 1683, 2057, 3267, 3447, 4213, 5049, 6171, 6511, 10341, 12639, 18513, 19533, 37917, 46343, 55539, 58599, 71621, 113751, 139029, 175797, 214863, 417087, 644589, 787831, 1251261, 1933767, 2363493, 7090479, 21271437]

約数ペア:

[(1, 21271437), (3, 7090479), (9, 2363493), (11, 1933767), (17, 1251261), (27, 787831), (33, 644589), (51, 417087), (99, 214863), (121, 175797), (153, 139029), (187, 113751), (297, 71621), (363, 58599), (383, 55539), (459, 46343), (561, 37917), (1089, 19533), (1149, 18513), (1683, 12639), (2057, 10341), (3267, 6511), (3447, 6171), (4213, 5049)]