21692275

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{71}}^1\times {\mathrm{101}}^1$

素因数の和:204

約数の個数: 36

約数和(自身を含む): 30279312

約数和(自身を除く): 8587037

約数列:

[1, 5, 11, 25, 55, 71, 101, 121, 275, 355, 505, 605, 781, 1111, 1775, 2525, 3025, 3905, 5555, 7171, 8591, 12221, 19525, 27775, 35855, 42955, 61105, 78881, 179275, 214775, 305525, 394405, 867691, 1972025, 4338455, 21692275]

約数ペア:

[(1, 21692275), (5, 4338455), (11, 1972025), (25, 867691), (55, 394405), (71, 305525), (101, 214775), (121, 179275), (275, 78881), (355, 61105), (505, 42955), (605, 35855), (781, 27775), (1111, 19525), (1775, 12221), (2525, 8591), (3025, 7171), (3905, 5555)]