21039812912

素因数分解:

$2^4\times {\mathrm{10889}}^1\times {\mathrm{120763}}^1$

素因数の和:131660

約数の個数: 20

約数和(自身を含む): 40768718760

約数和(自身を除く): 19728905848

約数列:

[1, 2, 4, 8, 16, 10889, 21778, 43556, 87112, 120763, 174224, 241526, 483052, 966104, 1932208, 1314988307, 2629976614, 5259953228, 10519906456, 21039812912]

約数ペア:

[(1, 21039812912), (2, 10519906456), (4, 5259953228), (8, 2629976614), (16, 1314988307), (10889, 1932208), (21778, 966104), (43556, 483052), (87112, 241526), (120763, 174224)]