81091905

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:278

約数の個数: 64

約数和(自身を含む): 145152000

約数和(自身を除く): 64060095

約数列:

[1, 3, 5, 15, 19, 23, 57, 69, 89, 95, 115, 139, 267, 285, 345, 417, 437, 445, 695, 1311, 1335, 1691, 2047, 2085, 2185, 2641, 3197, 5073, 6141, 6555, 7923, 8455, 9591, 10235, 12371, 13205, 15985, 25365, 30705, 37113, 38893, 39615, 47955, 60743, 61855, 116679, 182229, 185565, 194465, 235049, 284533, 303715, 583395, 705147, 853599, 911145, 1175245, 1422665, 3525735, 4267995, 5406127, 16218381, 27030635, 81091905]

約数ペア:

[(1, 81091905), (3, 27030635), (5, 16218381), (15, 5406127), (19, 4267995), (23, 3525735), (57, 1422665), (69, 1175245), (89, 911145), (95, 853599), (115, 705147), (139, 583395), (267, 303715), (285, 284533), (345, 235049), (417, 194465), (437, 185565), (445, 182229), (695, 116679), (1311, 61855), (1335, 60743), (1691, 47955), (2047, 39615), (2085, 38893), (2185, 37113), (2641, 30705), (3197, 25365), (5073, 15985), (6141, 13205), (6555, 12371), (7923, 10235), (8455, 9591)]