217528025

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{857}}^1$

素因数の和:962

約数の個数: 48

約数和(自身を含む): 321729408

約数和(自身を除く): 104201383

約数列:

[1, 5, 11, 13, 25, 55, 65, 71, 143, 275, 325, 355, 715, 781, 857, 923, 1775, 3575, 3905, 4285, 4615, 9427, 10153, 11141, 19525, 21425, 23075, 47135, 50765, 55705, 60847, 122551, 235675, 253825, 278525, 304235, 612755, 669317, 791011, 1521175, 3063775, 3346585, 3955055, 8701121, 16732925, 19775275, 43505605, 217528025]

約数ペア:

[(1, 217528025), (5, 43505605), (11, 19775275), (13, 16732925), (25, 8701121), (55, 3955055), (65, 3346585), (71, 3063775), (143, 1521175), (275, 791011), (325, 669317), (355, 612755), (715, 304235), (781, 278525), (857, 253825), (923, 235675), (1775, 122551), (3575, 60847), (3905, 55705), (4285, 50765), (4615, 47135), (9427, 23075), (10153, 21425), (11141, 19525)]