20708331

素因数分解:

$3^1\times 7^2\times {\mathrm{179}}^1\times {\mathrm{787}}^1$

素因数の和:983

約数の個数: 24

約数和(自身を含む): 32339520

約数和(自身を除く): 11631189

約数列:

[1, 3, 7, 21, 49, 147, 179, 537, 787, 1253, 2361, 3759, 5509, 8771, 16527, 26313, 38563, 115689, 140873, 422619, 986111, 2958333, 6902777, 20708331]

約数ペア:

[(1, 20708331), (3, 6902777), (7, 2958333), (21, 986111), (49, 422619), (147, 140873), (179, 115689), (537, 38563), (787, 26313), (1253, 16527), (2361, 8771), (3759, 5509)]