20381427

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{8951}}^1$

素因数の和:8991

約数の個数: 24

約数和(自身を含む): 33516288

約数和(自身を除く): 13134861

約数列:

[1, 3, 9, 11, 23, 33, 69, 99, 207, 253, 759, 2277, 8951, 26853, 80559, 98461, 205873, 295383, 617619, 886149, 1852857, 2264603, 6793809, 20381427]

約数ペア:

[(1, 20381427), (3, 6793809), (9, 2264603), (11, 1852857), (23, 886149), (33, 617619), (69, 295383), (99, 205873), (207, 98461), (253, 80559), (759, 26853), (2277, 8951)]