20793080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1$

素因数の和:229

約数の個数: 128

約数和(自身を含む): 60065280

約数和(自身を除く): 39272200

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 43, 44, 55, 56, 70, 77, 86, 88, 110, 140, 154, 157, 172, 215, 220, 280, 301, 308, 314, 344, 385, 430, 440, 473, 602, 616, 628, 770, 785, 860, 946, 1099, 1204, 1256, 1505, 1540, 1570, 1720, 1727, 1892, 2198, 2365, 2408, 3010, 3080, 3140, 3311, 3454, 3784, 4396, 4730, 5495, 6020, 6280, 6622, 6751, 6908, 8635, 8792, 9460, 10990, 12040, 12089, 13244, 13502, 13816, 16555, 17270, 18920, 21980, 24178, 26488, 27004, 33110, 33755, 34540, 43960, 47257, 48356, 54008, 60445, 66220, 67510, 69080, 74261, 94514, 96712, 120890, 132440, 135020, 148522, 189028, 236285, 241780, 270040, 297044, 371305, 378056, 472570, 483560, 519827, 594088, 742610, 945140, 1039654, 1485220, 1890280, 2079308, 2599135, 2970440, 4158616, 5198270, 10396540, 20793080]

約数ペア:

[(1, 20793080), (2, 10396540), (4, 5198270), (5, 4158616), (7, 2970440), (8, 2599135), (10, 2079308), (11, 1890280), (14, 1485220), (20, 1039654), (22, 945140), (28, 742610), (35, 594088), (40, 519827), (43, 483560), (44, 472570), (55, 378056), (56, 371305), (70, 297044), (77, 270040), (86, 241780), (88, 236285), (110, 189028), (140, 148522), (154, 135020), (157, 132440), (172, 120890), (215, 96712), (220, 94514), (280, 74261), (301, 69080), (308, 67510), (314, 66220), (344, 60445), (385, 54008), (430, 48356), (440, 47257), (473, 43960), (602, 34540), (616, 33755), (628, 33110), (770, 27004), (785, 26488), (860, 24178), (946, 21980), (1099, 18920), (1204, 17270), (1256, 16555), (1505, 13816), (1540, 13502), (1570, 13244), (1720, 12089), (1727, 12040), (1892, 10990), (2198, 9460), (2365, 8792), (2408, 8635), (3010, 6908), (3080, 6751), (3140, 6622), (3311, 6280), (3454, 6020), (3784, 5495), (4396, 4730)]