21510874

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{139681}}^1$

素因数の和:139701

約数の個数: 16

約数和(自身を含む): 40228416

約数和(自身を除く): 18717542

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 139681, 279362, 977767, 1536491, 1955534, 3072982, 10755437, 21510874]

約数ペア:

[(1, 21510874), (2, 10755437), (7, 3072982), (11, 1955534), (14, 1536491), (22, 977767), (77, 279362), (154, 139681)]