81337245

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1$

素因数の和:274

約数の個数: 64

約数和(自身を含む): 147806208

約数和(自身を除く): 66468963

約数列:

[1, 3, 5, 11, 15, 33, 53, 55, 71, 131, 159, 165, 213, 265, 355, 393, 583, 655, 781, 795, 1065, 1441, 1749, 1965, 2343, 2915, 3763, 3905, 4323, 6943, 7205, 8745, 9301, 11289, 11715, 18815, 20829, 21615, 27903, 34715, 41393, 46505, 56445, 76373, 102311, 104145, 124179, 139515, 206965, 229119, 306933, 381865, 492953, 511555, 620895, 1145595, 1478859, 1534665, 2464765, 5422483, 7394295, 16267449, 27112415, 81337245]

約数ペア:

[(1, 81337245), (3, 27112415), (5, 16267449), (11, 7394295), (15, 5422483), (33, 2464765), (53, 1534665), (55, 1478859), (71, 1145595), (131, 620895), (159, 511555), (165, 492953), (213, 381865), (265, 306933), (355, 229119), (393, 206965), (583, 139515), (655, 124179), (781, 104145), (795, 102311), (1065, 76373), (1441, 56445), (1749, 46505), (1965, 41393), (2343, 34715), (2915, 27903), (3763, 21615), (3905, 20829), (4323, 18815), (6943, 11715), (7205, 11289), (8745, 9301)]