218781640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{251}}^1\times {\mathrm{283}}^1$

素因数の和:563

約数の個数: 128

約数和(自身を含む): 618347520

約数和(自身を除く): 399565880

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 110, 140, 154, 220, 251, 280, 283, 308, 385, 440, 502, 566, 616, 770, 1004, 1132, 1255, 1415, 1540, 1757, 1981, 2008, 2264, 2510, 2761, 2830, 3080, 3113, 3514, 3962, 5020, 5522, 5660, 6226, 7028, 7924, 8785, 9905, 10040, 11044, 11320, 12452, 13805, 14056, 15565, 15848, 17570, 19327, 19810, 21791, 22088, 24904, 27610, 31130, 35140, 38654, 39620, 43582, 55220, 62260, 70280, 71033, 77308, 79240, 87164, 96635, 108955, 110440, 124520, 142066, 154616, 174328, 193270, 217910, 284132, 355165, 386540, 435820, 497231, 568264, 710330, 773080, 781363, 871640, 994462, 1420660, 1562726, 1988924, 2486155, 2841320, 3125452, 3906815, 3977848, 4972310, 5469541, 6250904, 7813630, 9944620, 10939082, 15627260, 19889240, 21878164, 27347705, 31254520, 43756328, 54695410, 109390820, 218781640]

約数ペア:

[(1, 218781640), (2, 109390820), (4, 54695410), (5, 43756328), (7, 31254520), (8, 27347705), (10, 21878164), (11, 19889240), (14, 15627260), (20, 10939082), (22, 9944620), (28, 7813630), (35, 6250904), (40, 5469541), (44, 4972310), (55, 3977848), (56, 3906815), (70, 3125452), (77, 2841320), (88, 2486155), (110, 1988924), (140, 1562726), (154, 1420660), (220, 994462), (251, 871640), (280, 781363), (283, 773080), (308, 710330), (385, 568264), (440, 497231), (502, 435820), (566, 386540), (616, 355165), (770, 284132), (1004, 217910), (1132, 193270), (1255, 174328), (1415, 154616), (1540, 142066), (1757, 124520), (1981, 110440), (2008, 108955), (2264, 96635), (2510, 87164), (2761, 79240), (2830, 77308), (3080, 71033), (3113, 70280), (3514, 62260), (3962, 55220), (5020, 43582), (5522, 39620), (5660, 38654), (6226, 35140), (7028, 31130), (7924, 27610), (8785, 24904), (9905, 22088), (10040, 21791), (11044, 19810), (11320, 19327), (12452, 17570), (13805, 15848), (14056, 15565)]