20530804987

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{139}}^1\times {\mathrm{2129}}^1$

素因数の和:2356

約数の個数: 64

約数和(自身を含む): 27825638400

約数和(自身を除く): 7294833413

約数列:

[1, 7, 11, 17, 53, 77, 119, 139, 187, 371, 583, 901, 973, 1309, 1529, 2129, 2363, 4081, 6307, 7367, 9911, 10703, 14903, 16541, 23419, 25993, 36193, 51569, 69377, 81037, 112837, 125239, 163933, 181951, 253351, 295931, 398123, 567259, 789859, 876673, 1241207, 1377629, 1918229, 2071517, 2786861, 3255241, 5030827, 8688449, 9643403, 13427603, 15684343, 21100519, 22786687, 35215789, 55339097, 109790401, 147703633, 172527773, 266633831, 387373679, 1207694411, 1866436817, 2932972141, 20530804987]

約数ペア:

[(1, 20530804987), (7, 2932972141), (11, 1866436817), (17, 1207694411), (53, 387373679), (77, 266633831), (119, 172527773), (139, 147703633), (187, 109790401), (371, 55339097), (583, 35215789), (901, 22786687), (973, 21100519), (1309, 15684343), (1529, 13427603), (2129, 9643403), (2363, 8688449), (4081, 5030827), (6307, 3255241), (7367, 2786861), (9911, 2071517), (10703, 1918229), (14903, 1377629), (16541, 1241207), (23419, 876673), (25993, 789859), (36193, 567259), (51569, 398123), (69377, 295931), (81037, 253351), (112837, 181951), (125239, 163933)]