20561982

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{489571}}^1$

素因数の和:489583

約数の個数: 16

約数和(自身を含む): 46998912

約数和(自身を除く): 26436930

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 489571, 979142, 1468713, 2937426, 3426997, 6853994, 10280991, 20561982]

約数ペア:

[(1, 20561982), (2, 10280991), (3, 6853994), (6, 3426997), (7, 2937426), (14, 1468713), (21, 979142), (42, 489571)]