81440821

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{55667}}^1$

素因数の和:55704

約数の個数: 16

約数和(自身を含む): 106882560

約数和(自身を除く): 25441739

約数列:

[1, 7, 11, 19, 77, 133, 209, 1463, 55667, 389669, 612337, 1057673, 4286359, 7403711, 11634403, 81440821]

約数ペア:

[(1, 81440821), (7, 11634403), (11, 7403711), (19, 4286359), (77, 1057673), (133, 612337), (209, 389669), (1463, 55667)]