21518877

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{1559}}^1$

素因数の和:1712

約数の個数: 16

約数和(自身を含む): 29652480

約数和(自身を除く): 8133603

約数列:

[1, 3, 43, 107, 129, 321, 1559, 4601, 4677, 13803, 67037, 166813, 201111, 500439, 7172959, 21518877]

約数ペア:

[(1, 21518877), (3, 7172959), (43, 500439), (107, 201111), (129, 166813), (321, 67037), (1559, 13803), (4601, 4677)]