821973177

素因数分解:

$3^4\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{3041}}^1$

素因数の和:3171

約数の個数: 40

約数和(自身を含む): 1272091392

約数和(自身を除く): 450118215

約数列:

[1, 3, 9, 27, 47, 71, 81, 141, 213, 423, 639, 1269, 1917, 3041, 3337, 3807, 5751, 9123, 10011, 27369, 30033, 82107, 90099, 142927, 215911, 246321, 270297, 428781, 647733, 1286343, 1943199, 3859029, 5829597, 10147817, 11577087, 17488791, 30443451, 91330353, 273991059, 821973177]

約数ペア:

[(1, 821973177), (3, 273991059), (9, 91330353), (27, 30443451), (47, 17488791), (71, 11577087), (81, 10147817), (141, 5829597), (213, 3859029), (423, 1943199), (639, 1286343), (1269, 647733), (1917, 428781), (3041, 270297), (3337, 246321), (3807, 215911), (5751, 142927), (9123, 90099), (10011, 82107), (27369, 30033)]