287678720

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{331}}^1$

素因数の和:456

約数の個数: 144

約数和(自身を含む): 798043008

約数和(自身を除く): 510364288

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 97, 112, 128, 140, 160, 194, 224, 256, 280, 320, 331, 388, 448, 485, 560, 640, 662, 679, 776, 896, 970, 1120, 1280, 1324, 1358, 1552, 1655, 1792, 1940, 2240, 2317, 2648, 2716, 3104, 3310, 3395, 3880, 4480, 4634, 5296, 5432, 6208, 6620, 6790, 7760, 8960, 9268, 10592, 10864, 11585, 12416, 13240, 13580, 15520, 18536, 21184, 21728, 23170, 24832, 26480, 27160, 31040, 32107, 37072, 42368, 43456, 46340, 52960, 54320, 62080, 64214, 74144, 84736, 86912, 92680, 105920, 108640, 124160, 128428, 148288, 160535, 173824, 185360, 211840, 217280, 224749, 256856, 296576, 321070, 370720, 423680, 434560, 449498, 513712, 593152, 642140, 741440, 869120, 898996, 1027424, 1123745, 1284280, 1482880, 1797992, 2054848, 2247490, 2568560, 2965760, 3595984, 4109696, 4494980, 5137120, 7191968, 8219392, 8989960, 10274240, 14383936, 17979920, 20548480, 28767872, 35959840, 41096960, 57535744, 71919680, 143839360, 287678720]

約数ペア:

[(1, 287678720), (2, 143839360), (4, 71919680), (5, 57535744), (7, 41096960), (8, 35959840), (10, 28767872), (14, 20548480), (16, 17979920), (20, 14383936), (28, 10274240), (32, 8989960), (35, 8219392), (40, 7191968), (56, 5137120), (64, 4494980), (70, 4109696), (80, 3595984), (97, 2965760), (112, 2568560), (128, 2247490), (140, 2054848), (160, 1797992), (194, 1482880), (224, 1284280), (256, 1123745), (280, 1027424), (320, 898996), (331, 869120), (388, 741440), (448, 642140), (485, 593152), (560, 513712), (640, 449498), (662, 434560), (679, 423680), (776, 370720), (896, 321070), (970, 296576), (1120, 256856), (1280, 224749), (1324, 217280), (1358, 211840), (1552, 185360), (1655, 173824), (1792, 160535), (1940, 148288), (2240, 128428), (2317, 124160), (2648, 108640), (2716, 105920), (3104, 92680), (3310, 86912), (3395, 84736), (3880, 74144), (4480, 64214), (4634, 62080), (5296, 54320), (5432, 52960), (6208, 46340), (6620, 43456), (6790, 42368), (7760, 37072), (8960, 32107), (9268, 31040), (10592, 27160), (10864, 26480), (11585, 24832), (12416, 23170), (13240, 21728), (13580, 21184), (15520, 18536)]