256817640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^2\times {\mathrm{131}}^1$

素因数の和:224

約数の個数: 192

約数和(自身を含む): 849372480

約数和(自身を除く): 592554840

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 31, 34, 40, 51, 60, 62, 68, 85, 93, 102, 120, 124, 131, 136, 155, 170, 186, 204, 248, 255, 262, 310, 340, 372, 393, 408, 465, 510, 524, 527, 620, 655, 680, 744, 786, 930, 961, 1020, 1048, 1054, 1240, 1310, 1572, 1581, 1860, 1922, 1965, 2040, 2108, 2227, 2620, 2635, 2883, 3144, 3162, 3720, 3844, 3930, 4061, 4216, 4454, 4805, 5240, 5270, 5766, 6324, 6681, 7688, 7860, 7905, 8122, 8908, 9610, 10540, 11135, 11532, 12183, 12648, 13362, 14415, 15720, 15810, 16244, 16337, 17816, 19220, 20305, 21080, 22270, 23064, 24366, 26724, 28830, 31620, 32488, 32674, 33405, 38440, 40610, 44540, 48732, 49011, 53448, 57660, 60915, 63240, 65348, 66810, 69037, 81220, 81685, 89080, 97464, 98022, 115320, 121830, 125891, 130696, 133620, 138074, 162440, 163370, 196044, 207111, 243660, 245055, 251782, 267240, 276148, 326740, 345185, 377673, 392088, 414222, 487320, 490110, 503564, 552296, 629455, 653480, 690370, 755346, 828444, 980220, 1007128, 1035555, 1258910, 1380740, 1510692, 1656888, 1888365, 1960440, 2071110, 2140147, 2517820, 2761480, 3021384, 3776730, 4142220, 4280294, 5035640, 6420441, 7553460, 8284440, 8560588, 10700735, 12840882, 15106920, 17121176, 21401470, 25681764, 32102205, 42802940, 51363528, 64204410, 85605880, 128408820, 256817640]

約数ペア:

[(1, 256817640), (2, 128408820), (3, 85605880), (4, 64204410), (5, 51363528), (6, 42802940), (8, 32102205), (10, 25681764), (12, 21401470), (15, 17121176), (17, 15106920), (20, 12840882), (24, 10700735), (30, 8560588), (31, 8284440), (34, 7553460), (40, 6420441), (51, 5035640), (60, 4280294), (62, 4142220), (68, 3776730), (85, 3021384), (93, 2761480), (102, 2517820), (120, 2140147), (124, 2071110), (131, 1960440), (136, 1888365), (155, 1656888), (170, 1510692), (186, 1380740), (204, 1258910), (248, 1035555), (255, 1007128), (262, 980220), (310, 828444), (340, 755346), (372, 690370), (393, 653480), (408, 629455), (465, 552296), (510, 503564), (524, 490110), (527, 487320), (620, 414222), (655, 392088), (680, 377673), (744, 345185), (786, 326740), (930, 276148), (961, 267240), (1020, 251782), (1048, 245055), (1054, 243660), (1240, 207111), (1310, 196044), (1572, 163370), (1581, 162440), (1860, 138074), (1922, 133620), (1965, 130696), (2040, 125891), (2108, 121830), (2227, 115320), (2620, 98022), (2635, 97464), (2883, 89080), (3144, 81685), (3162, 81220), (3720, 69037), (3844, 66810), (3930, 65348), (4061, 63240), (4216, 60915), (4454, 57660), (4805, 53448), (5240, 49011), (5270, 48732), (5766, 44540), (6324, 40610), (6681, 38440), (7688, 33405), (7860, 32674), (7905, 32488), (8122, 31620), (8908, 28830), (9610, 26724), (10540, 24366), (11135, 23064), (11532, 22270), (12183, 21080), (12648, 20305), (13362, 19220), (14415, 17816), (15720, 16337), (15810, 16244)]