1991567169

素因数分解:

$3^4\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{7591}}^1$

素因数の和:7723

約数の個数: 40

約数和(自身を含む): 3086603520

約数和(自身を除く): 1095036351

約数列:

[1, 3, 9, 27, 41, 79, 81, 123, 237, 369, 711, 1107, 2133, 3239, 3321, 6399, 7591, 9717, 22773, 29151, 68319, 87453, 204957, 262359, 311231, 599689, 614871, 933693, 1799067, 2801079, 5397201, 8403237, 16191603, 24587249, 25209711, 48574809, 73761747, 221285241, 663855723, 1991567169]

約数ペア:

[(1, 1991567169), (3, 663855723), (9, 221285241), (27, 73761747), (41, 48574809), (79, 25209711), (81, 24587249), (123, 16191603), (237, 8403237), (369, 5397201), (711, 2801079), (1107, 1799067), (2133, 933693), (3239, 614871), (3321, 599689), (6399, 311231), (7591, 262359), (9717, 204957), (22773, 87453), (29151, 68319)]