21009887998

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{86817719}}^1$

素因数の和:86817743

約数の個数: 12

約数和(自身を含む): 34640270280

約数和(自身を除く): 13630382282

約数列:

[1, 2, 11, 22, 121, 242, 86817719, 173635438, 954994909, 1909989818, 10504943999, 21009887998]

約数ペア:

[(1, 21009887998), (2, 10504943999), (11, 1909989818), (22, 954994909), (121, 173635438), (242, 86817719)]