257214720

素因数分解:

$2^8\times 3^1\times 5^1\times 7^2\times {\mathrm{1367}}^1$

素因数の和:1405

約数の個数: 216

約数和(自身を含む): 956297664

約数和(自身を除く): 699082944

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 49, 56, 60, 64, 70, 80, 84, 96, 98, 105, 112, 120, 128, 140, 147, 160, 168, 192, 196, 210, 224, 240, 245, 256, 280, 294, 320, 336, 384, 392, 420, 448, 480, 490, 560, 588, 640, 672, 735, 768, 784, 840, 896, 960, 980, 1120, 1176, 1280, 1344, 1367, 1470, 1568, 1680, 1792, 1920, 1960, 2240, 2352, 2688, 2734, 2940, 3136, 3360, 3840, 3920, 4101, 4480, 4704, 5376, 5468, 5880, 6272, 6720, 6835, 7840, 8202, 8960, 9408, 9569, 10936, 11760, 12544, 13440, 13670, 15680, 16404, 18816, 19138, 20505, 21872, 23520, 26880, 27340, 28707, 31360, 32808, 37632, 38276, 41010, 43744, 47040, 47845, 54680, 57414, 62720, 65616, 66983, 76552, 82020, 87488, 94080, 95690, 109360, 114828, 131232, 133966, 143535, 153104, 164040, 174976, 188160, 191380, 200949, 218720, 229656, 262464, 267932, 287070, 306208, 328080, 334915, 349952, 382760, 401898, 437440, 459312, 524928, 535864, 574140, 612416, 656160, 669830, 765520, 803796, 874880, 918624, 1004745, 1049856, 1071728, 1148280, 1224832, 1312320, 1339660, 1531040, 1607592, 1749760, 1837248, 2009490, 2143456, 2296560, 2449664, 2624640, 2679320, 3062080, 3215184, 3674496, 4018980, 4286912, 4593120, 5249280, 5358640, 6124160, 6430368, 7348992, 8037960, 8573824, 9186240, 10717280, 12248320, 12860736, 16075920, 17147648, 18372480, 21434560, 25721472, 32151840, 36744960, 42869120, 51442944, 64303680, 85738240, 128607360, 257214720]

約数ペア:

[(1, 257214720), (2, 128607360), (3, 85738240), (4, 64303680), (5, 51442944), (6, 42869120), (7, 36744960), (8, 32151840), (10, 25721472), (12, 21434560), (14, 18372480), (15, 17147648), (16, 16075920), (20, 12860736), (21, 12248320), (24, 10717280), (28, 9186240), (30, 8573824), (32, 8037960), (35, 7348992), (40, 6430368), (42, 6124160), (48, 5358640), (49, 5249280), (56, 4593120), (60, 4286912), (64, 4018980), (70, 3674496), (80, 3215184), (84, 3062080), (96, 2679320), (98, 2624640), (105, 2449664), (112, 2296560), (120, 2143456), (128, 2009490), (140, 1837248), (147, 1749760), (160, 1607592), (168, 1531040), (192, 1339660), (196, 1312320), (210, 1224832), (224, 1148280), (240, 1071728), (245, 1049856), (256, 1004745), (280, 918624), (294, 874880), (320, 803796), (336, 765520), (384, 669830), (392, 656160), (420, 612416), (448, 574140), (480, 535864), (490, 524928), (560, 459312), (588, 437440), (640, 401898), (672, 382760), (735, 349952), (768, 334915), (784, 328080), (840, 306208), (896, 287070), (960, 267932), (980, 262464), (1120, 229656), (1176, 218720), (1280, 200949), (1344, 191380), (1367, 188160), (1470, 174976), (1568, 164040), (1680, 153104), (1792, 143535), (1920, 133966), (1960, 131232), (2240, 114828), (2352, 109360), (2688, 95690), (2734, 94080), (2940, 87488), (3136, 82020), (3360, 76552), (3840, 66983), (3920, 65616), (4101, 62720), (4480, 57414), (4704, 54680), (5376, 47845), (5468, 47040), (5880, 43744), (6272, 41010), (6720, 38276), (6835, 37632), (7840, 32808), (8202, 31360), (8960, 28707), (9408, 27340), (9569, 26880), (10936, 23520), (11760, 21872), (12544, 20505), (13440, 19138), (13670, 18816), (15680, 16404)]