21074847

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{137}}^1\times {\mathrm{1091}}^1$

素因数の和:1278

約数の個数: 16

約数和(自身を含む): 28933632

約数和(自身を除く): 7858785

約数列:

[1, 3, 47, 137, 141, 411, 1091, 3273, 6439, 19317, 51277, 149467, 153831, 448401, 7024949, 21074847]

約数ペア:

[(1, 21074847), (3, 7024949), (47, 448401), (137, 153831), (141, 149467), (411, 51277), (1091, 19317), (3273, 6439)]