81663921

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{127}}^1\times {\mathrm{1931}}^1$

素因数の和:2101

約数の個数: 24

約数和(自身を含む): 122164224

約数和(自身を除く): 40500303

約数列:

[1, 3, 9, 37, 111, 127, 333, 381, 1143, 1931, 4699, 5793, 14097, 17379, 42291, 71447, 214341, 245237, 643023, 735711, 2207133, 9073769, 27221307, 81663921]

約数ペア:

[(1, 81663921), (3, 27221307), (9, 9073769), (37, 2207133), (111, 735711), (127, 643023), (333, 245237), (381, 214341), (1143, 71447), (1931, 42291), (4699, 17379), (5793, 14097)]