2620255

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:159

約数の個数: 24

約数和(自身を含む): 3562272

約数和(自身を除く): 942017

約数列:

[1, 5, 11, 55, 61, 71, 121, 305, 355, 605, 671, 781, 3355, 3905, 4331, 7381, 8591, 21655, 36905, 42955, 47641, 238205, 524051, 2620255]

約数ペア:

[(1, 2620255), (5, 524051), (11, 238205), (55, 47641), (61, 42955), (71, 36905), (121, 21655), (305, 8591), (355, 7381), (605, 4331), (671, 3905), (781, 3355)]