20894275

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{211}}^1\times {\mathrm{233}}^1$

素因数の和:471

約数の個数: 24

約数和(自身を含む): 27681264

約数和(自身を除く): 6786989

約数列:

[1, 5, 17, 25, 85, 211, 233, 425, 1055, 1165, 3587, 3961, 5275, 5825, 17935, 19805, 49163, 89675, 99025, 245815, 835771, 1229075, 4178855, 20894275]

約数ペア:

[(1, 20894275), (5, 4178855), (17, 1229075), (25, 835771), (85, 245815), (211, 99025), (233, 89675), (425, 49163), (1055, 19805), (1165, 17935), (3587, 5825), (3961, 5275)]