256407200

素因数分解:

$2^5\times 5^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{211}}^1$

素因数の和:276

約数の個数: 216

約数和(自身を含む): 755201664

約数和(自身を除く): 498794464

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 31, 32, 35, 40, 49, 50, 56, 62, 70, 80, 98, 100, 112, 124, 140, 155, 160, 175, 196, 200, 211, 217, 224, 245, 248, 280, 310, 350, 392, 400, 422, 434, 490, 496, 560, 620, 700, 775, 784, 800, 844, 868, 980, 992, 1055, 1085, 1120, 1225, 1240, 1400, 1477, 1519, 1550, 1568, 1688, 1736, 1960, 2110, 2170, 2450, 2480, 2800, 2954, 3038, 3100, 3376, 3472, 3920, 4220, 4340, 4900, 4960, 5275, 5425, 5600, 5908, 6076, 6200, 6541, 6752, 6944, 7385, 7595, 7840, 8440, 8680, 9800, 10339, 10550, 10850, 11816, 12152, 12400, 13082, 14770, 15190, 16880, 17360, 19600, 20678, 21100, 21700, 23632, 24304, 24800, 26164, 29540, 30380, 32705, 33760, 34720, 36925, 37975, 39200, 41356, 42200, 43400, 45787, 47264, 48608, 51695, 52328, 59080, 60760, 65410, 73850, 75950, 82712, 84400, 86800, 91574, 103390, 104656, 118160, 121520, 130820, 147700, 151900, 163525, 165424, 168800, 173600, 183148, 206780, 209312, 228935, 236320, 243040, 258475, 261640, 295400, 303800, 320509, 327050, 330848, 366296, 413560, 457870, 516950, 523280, 590800, 607600, 641018, 654100, 732592, 827120, 915740, 1033900, 1046560, 1144675, 1181600, 1215200, 1282036, 1308200, 1465184, 1602545, 1654240, 1831480, 2067800, 2289350, 2564072, 2616400, 3205090, 3662960, 4135600, 4578700, 5128144, 5232800, 6410180, 7325920, 8012725, 8271200, 9157400, 10256288, 12820360, 16025450, 18314800, 25640720, 32050900, 36629600, 51281440, 64101800, 128203600, 256407200]

約数ペア:

[(1, 256407200), (2, 128203600), (4, 64101800), (5, 51281440), (7, 36629600), (8, 32050900), (10, 25640720), (14, 18314800), (16, 16025450), (20, 12820360), (25, 10256288), (28, 9157400), (31, 8271200), (32, 8012725), (35, 7325920), (40, 6410180), (49, 5232800), (50, 5128144), (56, 4578700), (62, 4135600), (70, 3662960), (80, 3205090), (98, 2616400), (100, 2564072), (112, 2289350), (124, 2067800), (140, 1831480), (155, 1654240), (160, 1602545), (175, 1465184), (196, 1308200), (200, 1282036), (211, 1215200), (217, 1181600), (224, 1144675), (245, 1046560), (248, 1033900), (280, 915740), (310, 827120), (350, 732592), (392, 654100), (400, 641018), (422, 607600), (434, 590800), (490, 523280), (496, 516950), (560, 457870), (620, 413560), (700, 366296), (775, 330848), (784, 327050), (800, 320509), (844, 303800), (868, 295400), (980, 261640), (992, 258475), (1055, 243040), (1085, 236320), (1120, 228935), (1225, 209312), (1240, 206780), (1400, 183148), (1477, 173600), (1519, 168800), (1550, 165424), (1568, 163525), (1688, 151900), (1736, 147700), (1960, 130820), (2110, 121520), (2170, 118160), (2450, 104656), (2480, 103390), (2800, 91574), (2954, 86800), (3038, 84400), (3100, 82712), (3376, 75950), (3472, 73850), (3920, 65410), (4220, 60760), (4340, 59080), (4900, 52328), (4960, 51695), (5275, 48608), (5425, 47264), (5600, 45787), (5908, 43400), (6076, 42200), (6200, 41356), (6541, 39200), (6752, 37975), (6944, 36925), (7385, 34720), (7595, 33760), (7840, 32705), (8440, 30380), (8680, 29540), (9800, 26164), (10339, 24800), (10550, 24304), (10850, 23632), (11816, 21700), (12152, 21100), (12400, 20678), (13082, 19600), (14770, 17360), (15190, 16880)]