51281440

素因数分解:

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

素因数の和:271

約数の個数: 144

約数和(自身を含む): 146168064

約数和(自身を除く): 94886624

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 49, 56, 62, 70, 80, 98, 112, 124, 140, 155, 160, 196, 211, 217, 224, 245, 248, 280, 310, 392, 422, 434, 490, 496, 560, 620, 784, 844, 868, 980, 992, 1055, 1085, 1120, 1240, 1477, 1519, 1568, 1688, 1736, 1960, 2110, 2170, 2480, 2954, 3038, 3376, 3472, 3920, 4220, 4340, 4960, 5908, 6076, 6541, 6752, 6944, 7385, 7595, 7840, 8440, 8680, 10339, 11816, 12152, 13082, 14770, 15190, 16880, 17360, 20678, 23632, 24304, 26164, 29540, 30380, 32705, 33760, 34720, 41356, 45787, 47264, 48608, 51695, 52328, 59080, 60760, 65410, 82712, 91574, 103390, 104656, 118160, 121520, 130820, 165424, 183148, 206780, 209312, 228935, 236320, 243040, 261640, 320509, 330848, 366296, 413560, 457870, 523280, 641018, 732592, 827120, 915740, 1046560, 1282036, 1465184, 1602545, 1654240, 1831480, 2564072, 3205090, 3662960, 5128144, 6410180, 7325920, 10256288, 12820360, 25640720, 51281440]

約数ペア:

[(1, 51281440), (2, 25640720), (4, 12820360), (5, 10256288), (7, 7325920), (8, 6410180), (10, 5128144), (14, 3662960), (16, 3205090), (20, 2564072), (28, 1831480), (31, 1654240), (32, 1602545), (35, 1465184), (40, 1282036), (49, 1046560), (56, 915740), (62, 827120), (70, 732592), (80, 641018), (98, 523280), (112, 457870), (124, 413560), (140, 366296), (155, 330848), (160, 320509), (196, 261640), (211, 243040), (217, 236320), (224, 228935), (245, 209312), (248, 206780), (280, 183148), (310, 165424), (392, 130820), (422, 121520), (434, 118160), (490, 104656), (496, 103390), (560, 91574), (620, 82712), (784, 65410), (844, 60760), (868, 59080), (980, 52328), (992, 51695), (1055, 48608), (1085, 47264), (1120, 45787), (1240, 41356), (1477, 34720), (1519, 33760), (1568, 32705), (1688, 30380), (1736, 29540), (1960, 26164), (2110, 24304), (2170, 23632), (2480, 20678), (2954, 17360), (3038, 16880), (3376, 15190), (3472, 14770), (3920, 13082), (4220, 12152), (4340, 11816), (4960, 10339), (5908, 8680), (6076, 8440), (6541, 7840), (6752, 7595), (6944, 7385)]