7820001

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{139}}^1$

素因数の和:218

約数の個数: 48

約数和(自身を含む): 13977600

約数和(自身を除く): 6157599

約数列:

[1, 3, 7, 9, 19, 21, 47, 57, 63, 133, 139, 141, 171, 329, 399, 417, 423, 893, 973, 987, 1197, 1251, 2641, 2679, 2919, 2961, 6251, 6533, 7923, 8037, 8757, 18487, 18753, 19599, 23769, 45731, 55461, 56259, 58797, 124127, 137193, 166383, 372381, 411579, 868889, 1117143, 2606667, 7820001]

約数ペア:

[(1, 7820001), (3, 2606667), (7, 1117143), (9, 868889), (19, 411579), (21, 372381), (47, 166383), (57, 137193), (63, 124127), (133, 58797), (139, 56259), (141, 55461), (171, 45731), (329, 23769), (399, 19599), (417, 18753), (423, 18487), (893, 8757), (973, 8037), (987, 7923), (1197, 6533), (1251, 6251), (2641, 2961), (2679, 2919)]