278311707

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1$

素因数の和:206

約数の個数: 80

約数和(自身を含む): 460922880

約数和(自身を除く): 182611173

約数列:

[1, 3, 9, 23, 27, 31, 61, 69, 79, 81, 93, 183, 207, 237, 279, 549, 621, 711, 713, 837, 1403, 1647, 1817, 1863, 1891, 2133, 2139, 2449, 2511, 4209, 4819, 4941, 5451, 5673, 6399, 6417, 7347, 12627, 14457, 16353, 17019, 19251, 22041, 37881, 43371, 43493, 49059, 51057, 56327, 57753, 66123, 110837, 113643, 130113, 130479, 147177, 149389, 153171, 168981, 198369, 332511, 390339, 391437, 448167, 506943, 997533, 1174311, 1344501, 1520829, 2992599, 3435947, 3522933, 4033503, 4562487, 8977797, 10307841, 12100509, 30923523, 92770569, 278311707]

約数ペア:

[(1, 278311707), (3, 92770569), (9, 30923523), (23, 12100509), (27, 10307841), (31, 8977797), (61, 4562487), (69, 4033503), (79, 3522933), (81, 3435947), (93, 2992599), (183, 1520829), (207, 1344501), (237, 1174311), (279, 997533), (549, 506943), (621, 448167), (711, 391437), (713, 390339), (837, 332511), (1403, 198369), (1647, 168981), (1817, 153171), (1863, 149389), (1891, 147177), (2133, 130479), (2139, 130113), (2449, 113643), (2511, 110837), (4209, 66123), (4819, 57753), (4941, 56327), (5451, 51057), (5673, 49059), (6399, 43493), (6417, 43371), (7347, 37881), (12627, 22041), (14457, 19251), (16353, 17019)]