21697445

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{97}}^1$

素因数の和:210

約数の個数: 48

約数和(自身を含む): 33784128

約数和(自身を除く): 12086683

約数列:

[1, 5, 7, 11, 35, 49, 55, 77, 83, 97, 245, 385, 415, 485, 539, 581, 679, 913, 1067, 2695, 2905, 3395, 4067, 4565, 4753, 5335, 6391, 7469, 8051, 20335, 23765, 31955, 37345, 40255, 44737, 52283, 56357, 88561, 223685, 261415, 281785, 394499, 442805, 619927, 1972495, 3099635, 4339489, 21697445]

約数ペア:

[(1, 21697445), (5, 4339489), (7, 3099635), (11, 1972495), (35, 619927), (49, 442805), (55, 394499), (77, 281785), (83, 261415), (97, 223685), (245, 88561), (385, 56357), (415, 52283), (485, 44737), (539, 40255), (581, 37345), (679, 31955), (913, 23765), (1067, 20335), (2695, 8051), (2905, 7469), (3395, 6391), (4067, 5335), (4565, 4753)]