21768201

素因数分解:

$3^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{3797}}^1$

素因数の和:3830

約数の個数: 36

約数和(自身を含む): 39400452

約数和(自身を除く): 17632251

約数列:

[1, 3, 7, 9, 13, 21, 39, 49, 63, 91, 117, 147, 273, 441, 637, 819, 1911, 3797, 5733, 11391, 26579, 34173, 49361, 79737, 148083, 186053, 239211, 345527, 444249, 558159, 1036581, 1674477, 2418689, 3109743, 7256067, 21768201]

約数ペア:

[(1, 21768201), (3, 7256067), (7, 3109743), (9, 2418689), (13, 1674477), (21, 1036581), (39, 558159), (49, 444249), (63, 345527), (91, 239211), (117, 186053), (147, 148083), (273, 79737), (441, 49361), (637, 34173), (819, 26579), (1911, 11391), (3797, 5733)]