21851697

素因数分解:

$3^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{3457}}^1$

素因数の和:3517

約数の個数: 24

約数和(自身を含む): 34690656

約数和(自身を除く): 12838959

約数列:

[1, 3, 7, 21, 43, 49, 129, 147, 301, 903, 2107, 3457, 6321, 10371, 24199, 72597, 148651, 169393, 445953, 508179, 1040557, 3121671, 7283899, 21851697]

約数ペア:

[(1, 21851697), (3, 7283899), (7, 3121671), (21, 1040557), (43, 508179), (49, 445953), (129, 169393), (147, 148651), (301, 72597), (903, 24199), (2107, 10371), (3457, 6321)]