28287171

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1$

素因数の和:185

約数の個数: 64

約数和(自身を含む): 49351680

約数和(自身を除く): 21064509

約数列:

[1, 3, 9, 11, 23, 27, 33, 41, 69, 99, 101, 123, 207, 253, 297, 303, 369, 451, 621, 759, 909, 943, 1107, 1111, 1353, 2277, 2323, 2727, 2829, 3333, 4059, 4141, 6831, 6969, 8487, 9999, 10373, 12177, 12423, 20907, 25461, 25553, 29997, 31119, 37269, 45551, 62721, 76659, 93357, 95243, 111807, 136653, 229977, 280071, 285729, 409959, 689931, 857187, 1047673, 1229877, 2571561, 3143019, 9429057, 28287171]

約数ペア:

[(1, 28287171), (3, 9429057), (9, 3143019), (11, 2571561), (23, 1229877), (27, 1047673), (33, 857187), (41, 689931), (69, 409959), (99, 285729), (101, 280071), (123, 229977), (207, 136653), (253, 111807), (297, 95243), (303, 93357), (369, 76659), (451, 62721), (621, 45551), (759, 37269), (909, 31119), (943, 29997), (1107, 25553), (1111, 25461), (1353, 20907), (2277, 12423), (2323, 12177), (2727, 10373), (2829, 9999), (3333, 8487), (4059, 6969), (4141, 6831)]