257234320

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{211}}^1\times {\mathrm{311}}^1$

素因数の和:549

約数の個数: 120

約数和(自身を含む): 701258688

約数和(自身を除く): 444024368

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 211, 245, 280, 311, 392, 422, 490, 560, 622, 784, 844, 980, 1055, 1244, 1477, 1555, 1688, 1960, 2110, 2177, 2488, 2954, 3110, 3376, 3920, 4220, 4354, 4976, 5908, 6220, 7385, 8440, 8708, 10339, 10885, 11816, 12440, 14770, 15239, 16880, 17416, 20678, 21770, 23632, 24880, 29540, 30478, 34832, 41356, 43540, 51695, 59080, 60956, 65621, 76195, 82712, 87080, 103390, 118160, 121912, 131242, 152390, 165424, 174160, 206780, 243824, 262484, 304780, 328105, 413560, 459347, 524968, 609560, 656210, 827120, 918694, 1049936, 1219120, 1312420, 1837388, 2296735, 2624840, 3215429, 3674776, 4593470, 5249680, 6430858, 7349552, 9186940, 12861716, 16077145, 18373880, 25723432, 32154290, 36747760, 51446864, 64308580, 128617160, 257234320]

約数ペア:

[(1, 257234320), (2, 128617160), (4, 64308580), (5, 51446864), (7, 36747760), (8, 32154290), (10, 25723432), (14, 18373880), (16, 16077145), (20, 12861716), (28, 9186940), (35, 7349552), (40, 6430858), (49, 5249680), (56, 4593470), (70, 3674776), (80, 3215429), (98, 2624840), (112, 2296735), (140, 1837388), (196, 1312420), (211, 1219120), (245, 1049936), (280, 918694), (311, 827120), (392, 656210), (422, 609560), (490, 524968), (560, 459347), (622, 413560), (784, 328105), (844, 304780), (980, 262484), (1055, 243824), (1244, 206780), (1477, 174160), (1555, 165424), (1688, 152390), (1960, 131242), (2110, 121912), (2177, 118160), (2488, 103390), (2954, 87080), (3110, 82712), (3376, 76195), (3920, 65621), (4220, 60956), (4354, 59080), (4976, 51695), (5908, 43540), (6220, 41356), (7385, 34832), (8440, 30478), (8708, 29540), (10339, 24880), (10885, 23632), (11816, 21770), (12440, 20678), (14770, 17416), (15239, 16880)]