20379681

素因数分解:

$3^5\times 7^1\times {\mathrm{11981}}^1$

素因数の和:12003

約数の個数: 24

約数和(自身を含む): 34891584

約数和(自身を除く): 14511903

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 1701, 11981, 35943, 83867, 107829, 251601, 323487, 754803, 970461, 2264409, 2911383, 6793227, 20379681]

約数ペア:

[(1, 20379681), (3, 6793227), (7, 2911383), (9, 2264409), (21, 970461), (27, 754803), (63, 323487), (81, 251601), (189, 107829), (243, 83867), (567, 35943), (1701, 11981)]