256476780

素因数分解:

$2^2\times 3^6\times 5^1\times 7^2\times {\mathrm{359}}^1$

素因数の和:400

約数の個数: 252

約数和(自身を含む): 941991120

約数和(自身を除く): 685514340

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 49, 54, 60, 63, 70, 81, 84, 90, 98, 105, 108, 126, 135, 140, 147, 162, 180, 189, 196, 210, 243, 245, 252, 270, 294, 315, 324, 359, 378, 405, 420, 441, 486, 490, 540, 567, 588, 630, 718, 729, 735, 756, 810, 882, 945, 972, 980, 1077, 1134, 1215, 1260, 1323, 1436, 1458, 1470, 1620, 1701, 1764, 1795, 1890, 2154, 2205, 2268, 2430, 2513, 2646, 2835, 2916, 2940, 3231, 3402, 3590, 3645, 3780, 3969, 4308, 4410, 4860, 5026, 5103, 5292, 5385, 5670, 6462, 6615, 6804, 7180, 7290, 7539, 7938, 8505, 8820, 9693, 10052, 10206, 10770, 11340, 11907, 12565, 12924, 13230, 14580, 15078, 15876, 16155, 17010, 17591, 19386, 19845, 20412, 21540, 22617, 23814, 25130, 25515, 26460, 29079, 30156, 32310, 34020, 35182, 35721, 37695, 38772, 39690, 45234, 47628, 48465, 50260, 51030, 52773, 58158, 59535, 64620, 67851, 70364, 71442, 75390, 79380, 87237, 87955, 90468, 96930, 102060, 105546, 113085, 116316, 119070, 135702, 142884, 145395, 150780, 158319, 174474, 175910, 178605, 193860, 203553, 211092, 226170, 238140, 261711, 263865, 271404, 290790, 316638, 339255, 348948, 351820, 357210, 407106, 436185, 452340, 474957, 523422, 527730, 581580, 610659, 633276, 678510, 714420, 791595, 814212, 872370, 949914, 1017765, 1046844, 1055460, 1221318, 1308555, 1357020, 1424871, 1583190, 1744740, 1831977, 1899828, 2035530, 2374785, 2442636, 2617110, 2849742, 3053295, 3166380, 3663954, 4071060, 4274613, 4749570, 5234220, 5699484, 6106590, 7124355, 7327908, 8549226, 9159885, 9499140, 12213180, 12823839, 14248710, 17098452, 18319770, 21373065, 25647678, 28497420, 36639540, 42746130, 51295356, 64119195, 85492260, 128238390, 256476780]

約数ペア:

[(1, 256476780), (2, 128238390), (3, 85492260), (4, 64119195), (5, 51295356), (6, 42746130), (7, 36639540), (9, 28497420), (10, 25647678), (12, 21373065), (14, 18319770), (15, 17098452), (18, 14248710), (20, 12823839), (21, 12213180), (27, 9499140), (28, 9159885), (30, 8549226), (35, 7327908), (36, 7124355), (42, 6106590), (45, 5699484), (49, 5234220), (54, 4749570), (60, 4274613), (63, 4071060), (70, 3663954), (81, 3166380), (84, 3053295), (90, 2849742), (98, 2617110), (105, 2442636), (108, 2374785), (126, 2035530), (135, 1899828), (140, 1831977), (147, 1744740), (162, 1583190), (180, 1424871), (189, 1357020), (196, 1308555), (210, 1221318), (243, 1055460), (245, 1046844), (252, 1017765), (270, 949914), (294, 872370), (315, 814212), (324, 791595), (359, 714420), (378, 678510), (405, 633276), (420, 610659), (441, 581580), (486, 527730), (490, 523422), (540, 474957), (567, 452340), (588, 436185), (630, 407106), (718, 357210), (729, 351820), (735, 348948), (756, 339255), (810, 316638), (882, 290790), (945, 271404), (972, 263865), (980, 261711), (1077, 238140), (1134, 226170), (1215, 211092), (1260, 203553), (1323, 193860), (1436, 178605), (1458, 175910), (1470, 174474), (1620, 158319), (1701, 150780), (1764, 145395), (1795, 142884), (1890, 135702), (2154, 119070), (2205, 116316), (2268, 113085), (2430, 105546), (2513, 102060), (2646, 96930), (2835, 90468), (2916, 87955), (2940, 87237), (3231, 79380), (3402, 75390), (3590, 71442), (3645, 70364), (3780, 67851), (3969, 64620), (4308, 59535), (4410, 58158), (4860, 52773), (5026, 51030), (5103, 50260), (5292, 48465), (5385, 47628), (5670, 45234), (6462, 39690), (6615, 38772), (6804, 37695), (7180, 35721), (7290, 35182), (7539, 34020), (7938, 32310), (8505, 30156), (8820, 29079), (9693, 26460), (10052, 25515), (10206, 25130), (10770, 23814), (11340, 22617), (11907, 21540), (12565, 20412), (12924, 19845), (13230, 19386), (14580, 17591), (15078, 17010), (15876, 16155)]