81778983

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1$

素因数の和:252

約数の個数: 64

約数和(自身を含む): 137625600

約数和(自身を除く): 55846617

約数列:

[1, 3, 11, 13, 19, 33, 39, 57, 79, 127, 143, 209, 237, 247, 381, 429, 627, 741, 869, 1027, 1397, 1501, 1651, 2413, 2607, 2717, 3081, 4191, 4503, 4953, 7239, 8151, 10033, 11297, 16511, 18161, 19513, 26543, 30099, 31369, 33891, 49533, 54483, 58539, 79629, 94107, 110363, 130429, 190627, 214643, 331089, 345059, 391287, 571881, 643929, 1035177, 1434719, 2096897, 2478151, 4304157, 6290691, 7434453, 27259661, 81778983]

約数ペア:

[(1, 81778983), (3, 27259661), (11, 7434453), (13, 6290691), (19, 4304157), (33, 2478151), (39, 2096897), (57, 1434719), (79, 1035177), (127, 643929), (143, 571881), (209, 391287), (237, 345059), (247, 331089), (381, 214643), (429, 190627), (627, 130429), (741, 110363), (869, 94107), (1027, 79629), (1397, 58539), (1501, 54483), (1651, 49533), (2413, 33891), (2607, 31369), (2717, 30099), (3081, 26543), (4191, 19513), (4503, 18161), (4953, 16511), (7239, 11297), (8151, 10033)]