172221280

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{1997}}^1$

素因数の和:2037

約数の個数: 144

約数和(自身を含む): 516586896

約数和(自身を除く): 344365616

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 32, 35, 40, 44, 49, 55, 56, 70, 77, 80, 88, 98, 110, 112, 140, 154, 160, 176, 196, 220, 224, 245, 280, 308, 352, 385, 392, 440, 490, 539, 560, 616, 770, 784, 880, 980, 1078, 1120, 1232, 1540, 1568, 1760, 1960, 1997, 2156, 2464, 2695, 3080, 3920, 3994, 4312, 5390, 6160, 7840, 7988, 8624, 9985, 10780, 12320, 13979, 15976, 17248, 19970, 21560, 21967, 27958, 31952, 39940, 43120, 43934, 55916, 63904, 69895, 79880, 86240, 87868, 97853, 109835, 111832, 139790, 153769, 159760, 175736, 195706, 219670, 223664, 279580, 307538, 319520, 351472, 391412, 439340, 447328, 489265, 559160, 615076, 702944, 768845, 782824, 878680, 978530, 1076383, 1118320, 1230152, 1537690, 1565648, 1757360, 1957060, 2152766, 2236640, 2460304, 3075380, 3131296, 3514720, 3914120, 4305532, 4920608, 5381915, 6150760, 7828240, 8611064, 10763830, 12301520, 15656480, 17222128, 21527660, 24603040, 34444256, 43055320, 86110640, 172221280]

約数ペア:

[(1, 172221280), (2, 86110640), (4, 43055320), (5, 34444256), (7, 24603040), (8, 21527660), (10, 17222128), (11, 15656480), (14, 12301520), (16, 10763830), (20, 8611064), (22, 7828240), (28, 6150760), (32, 5381915), (35, 4920608), (40, 4305532), (44, 3914120), (49, 3514720), (55, 3131296), (56, 3075380), (70, 2460304), (77, 2236640), (80, 2152766), (88, 1957060), (98, 1757360), (110, 1565648), (112, 1537690), (140, 1230152), (154, 1118320), (160, 1076383), (176, 978530), (196, 878680), (220, 782824), (224, 768845), (245, 702944), (280, 615076), (308, 559160), (352, 489265), (385, 447328), (392, 439340), (440, 391412), (490, 351472), (539, 319520), (560, 307538), (616, 279580), (770, 223664), (784, 219670), (880, 195706), (980, 175736), (1078, 159760), (1120, 153769), (1232, 139790), (1540, 111832), (1568, 109835), (1760, 97853), (1960, 87868), (1997, 86240), (2156, 79880), (2464, 69895), (2695, 63904), (3080, 55916), (3920, 43934), (3994, 43120), (4312, 39940), (5390, 31952), (6160, 27958), (7840, 21967), (7988, 21560), (8624, 19970), (9985, 17248), (10780, 15976), (12320, 13979)]