28308280

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1$

素因数の和:150

約数の個数: 192

約数和(自身を含む): 87907680

約数和(自身を除く): 59599400

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 20, 22, 26, 28, 35, 40, 44, 49, 52, 55, 56, 65, 70, 77, 88, 91, 98, 101, 104, 110, 130, 140, 143, 154, 182, 196, 202, 220, 245, 260, 280, 286, 308, 364, 385, 392, 404, 440, 455, 490, 505, 520, 539, 572, 616, 637, 707, 715, 728, 770, 808, 910, 980, 1001, 1010, 1078, 1111, 1144, 1274, 1313, 1414, 1430, 1540, 1820, 1960, 2002, 2020, 2156, 2222, 2548, 2626, 2695, 2828, 2860, 3080, 3185, 3535, 3640, 4004, 4040, 4312, 4444, 4949, 5005, 5096, 5252, 5390, 5555, 5656, 5720, 6370, 6565, 7007, 7070, 7777, 8008, 8888, 9191, 9898, 10010, 10504, 10780, 11110, 12740, 13130, 14014, 14140, 14443, 15554, 18382, 19796, 20020, 21560, 22220, 24745, 25480, 26260, 28028, 28280, 28886, 31108, 35035, 36764, 38885, 39592, 40040, 44440, 45955, 49490, 52520, 54439, 56056, 57772, 62216, 64337, 70070, 72215, 73528, 77770, 91910, 98980, 101101, 108878, 115544, 128674, 140140, 144430, 155540, 183820, 197960, 202202, 217756, 257348, 272195, 280280, 288860, 311080, 321685, 367640, 404404, 435512, 505505, 514696, 544390, 577720, 643370, 707707, 808808, 1011010, 1088780, 1286740, 1415414, 2022020, 2177560, 2573480, 2830828, 3538535, 4044040, 5661656, 7077070, 14154140, 28308280]

約数ペア:

[(1, 28308280), (2, 14154140), (4, 7077070), (5, 5661656), (7, 4044040), (8, 3538535), (10, 2830828), (11, 2573480), (13, 2177560), (14, 2022020), (20, 1415414), (22, 1286740), (26, 1088780), (28, 1011010), (35, 808808), (40, 707707), (44, 643370), (49, 577720), (52, 544390), (55, 514696), (56, 505505), (65, 435512), (70, 404404), (77, 367640), (88, 321685), (91, 311080), (98, 288860), (101, 280280), (104, 272195), (110, 257348), (130, 217756), (140, 202202), (143, 197960), (154, 183820), (182, 155540), (196, 144430), (202, 140140), (220, 128674), (245, 115544), (260, 108878), (280, 101101), (286, 98980), (308, 91910), (364, 77770), (385, 73528), (392, 72215), (404, 70070), (440, 64337), (455, 62216), (490, 57772), (505, 56056), (520, 54439), (539, 52520), (572, 49490), (616, 45955), (637, 44440), (707, 40040), (715, 39592), (728, 38885), (770, 36764), (808, 35035), (910, 31108), (980, 28886), (1001, 28280), (1010, 28028), (1078, 26260), (1111, 25480), (1144, 24745), (1274, 22220), (1313, 21560), (1414, 20020), (1430, 19796), (1540, 18382), (1820, 15554), (1960, 14443), (2002, 14140), (2020, 14014), (2156, 13130), (2222, 12740), (2548, 11110), (2626, 10780), (2695, 10504), (2828, 10010), (2860, 9898), (3080, 9191), (3185, 8888), (3535, 8008), (3640, 7777), (4004, 7070), (4040, 7007), (4312, 6565), (4444, 6370), (4949, 5720), (5005, 5656), (5096, 5555), (5252, 5390)]