257532240

素因数分解:

$2^4\times 3^1\times 5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{359}}^1$

素因数の和:450

約数の個数: 240

約数和(自身を含む): 946546560

約数和(自身を除く): 689014320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 49, 56, 60, 61, 70, 80, 84, 98, 105, 112, 120, 122, 140, 147, 168, 183, 196, 210, 240, 244, 245, 280, 294, 305, 336, 359, 366, 392, 420, 427, 488, 490, 560, 588, 610, 718, 732, 735, 784, 840, 854, 915, 976, 980, 1077, 1176, 1220, 1281, 1436, 1464, 1470, 1680, 1708, 1795, 1830, 1960, 2135, 2154, 2352, 2440, 2513, 2562, 2872, 2928, 2940, 2989, 3416, 3590, 3660, 3920, 4270, 4308, 4880, 5026, 5124, 5385, 5744, 5880, 5978, 6405, 6832, 7180, 7320, 7539, 8540, 8616, 8967, 10052, 10248, 10770, 11760, 11956, 12565, 12810, 14360, 14640, 14945, 15078, 17080, 17232, 17591, 17934, 20104, 20496, 21540, 21899, 23912, 25130, 25620, 28720, 29890, 30156, 34160, 35182, 35868, 37695, 40208, 43080, 43798, 44835, 47824, 50260, 51240, 52773, 59780, 60312, 65697, 70364, 71736, 75390, 86160, 87596, 87955, 89670, 100520, 102480, 105546, 109495, 119560, 120624, 131394, 140728, 143472, 150780, 153293, 175192, 175910, 179340, 201040, 211092, 218990, 239120, 262788, 263865, 281456, 301560, 306586, 328485, 350384, 351820, 358680, 422184, 437980, 459879, 525576, 527730, 603120, 613172, 656970, 703640, 717360, 766465, 844368, 875960, 919758, 1051152, 1055460, 1073051, 1226344, 1313940, 1407280, 1532930, 1751920, 1839516, 2110920, 2146102, 2299395, 2452688, 2627880, 3065860, 3219153, 3679032, 4221840, 4292204, 4598790, 5255760, 5365255, 6131720, 6438306, 7358064, 8584408, 9197580, 10730510, 12263440, 12876612, 16095765, 17168816, 18395160, 21461020, 25753224, 32191530, 36790320, 42922040, 51506448, 64383060, 85844080, 128766120, 257532240]

約数ペア:

[(1, 257532240), (2, 128766120), (3, 85844080), (4, 64383060), (5, 51506448), (6, 42922040), (7, 36790320), (8, 32191530), (10, 25753224), (12, 21461020), (14, 18395160), (15, 17168816), (16, 16095765), (20, 12876612), (21, 12263440), (24, 10730510), (28, 9197580), (30, 8584408), (35, 7358064), (40, 6438306), (42, 6131720), (48, 5365255), (49, 5255760), (56, 4598790), (60, 4292204), (61, 4221840), (70, 3679032), (80, 3219153), (84, 3065860), (98, 2627880), (105, 2452688), (112, 2299395), (120, 2146102), (122, 2110920), (140, 1839516), (147, 1751920), (168, 1532930), (183, 1407280), (196, 1313940), (210, 1226344), (240, 1073051), (244, 1055460), (245, 1051152), (280, 919758), (294, 875960), (305, 844368), (336, 766465), (359, 717360), (366, 703640), (392, 656970), (420, 613172), (427, 603120), (488, 527730), (490, 525576), (560, 459879), (588, 437980), (610, 422184), (718, 358680), (732, 351820), (735, 350384), (784, 328485), (840, 306586), (854, 301560), (915, 281456), (976, 263865), (980, 262788), (1077, 239120), (1176, 218990), (1220, 211092), (1281, 201040), (1436, 179340), (1464, 175910), (1470, 175192), (1680, 153293), (1708, 150780), (1795, 143472), (1830, 140728), (1960, 131394), (2135, 120624), (2154, 119560), (2352, 109495), (2440, 105546), (2513, 102480), (2562, 100520), (2872, 89670), (2928, 87955), (2940, 87596), (2989, 86160), (3416, 75390), (3590, 71736), (3660, 70364), (3920, 65697), (4270, 60312), (4308, 59780), (4880, 52773), (5026, 51240), (5124, 50260), (5385, 47824), (5744, 44835), (5880, 43798), (5978, 43080), (6405, 40208), (6832, 37695), (7180, 35868), (7320, 35182), (7539, 34160), (8540, 30156), (8616, 29890), (8967, 28720), (10052, 25620), (10248, 25130), (10770, 23912), (11760, 21899), (11956, 21540), (12565, 20496), (12810, 20104), (14360, 17934), (14640, 17591), (14945, 17232), (15078, 17080)]