81706471

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{241}}^1$

素因数の和:320

約数の個数: 48

約数和(自身を含む): 113221152

約数和(自身を除く): 31514681

約数列:

[1, 7, 11, 17, 37, 49, 77, 119, 187, 241, 259, 407, 539, 629, 833, 1309, 1687, 1813, 2651, 2849, 4097, 4403, 6919, 8917, 9163, 11809, 18557, 19943, 28679, 30821, 45067, 48433, 62419, 98087, 129899, 151589, 200753, 315469, 339031, 436933, 686609, 1061123, 1667479, 2208283, 4806263, 7427861, 11672353, 81706471]

約数ペア:

[(1, 81706471), (7, 11672353), (11, 7427861), (17, 4806263), (37, 2208283), (49, 1667479), (77, 1061123), (119, 686609), (187, 436933), (241, 339031), (259, 315469), (407, 200753), (539, 151589), (629, 129899), (833, 98087), (1309, 62419), (1687, 48433), (1813, 45067), (2651, 30821), (2849, 28679), (4097, 19943), (4403, 18557), (6919, 11809), (8917, 9163)]