80668720

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^2\times {\mathrm{109}}^1$

素因数の和:191

約数の個数: 120

約数和(自身を含む): 213847920

約数和(自身を除く): 133179200

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 29, 40, 44, 55, 58, 80, 88, 109, 110, 116, 145, 176, 218, 220, 232, 290, 319, 436, 440, 464, 545, 580, 638, 841, 872, 880, 1090, 1160, 1199, 1276, 1595, 1682, 1744, 2180, 2320, 2398, 2552, 3161, 3190, 3364, 4205, 4360, 4796, 5104, 5995, 6322, 6380, 6728, 8410, 8720, 9251, 9592, 11990, 12644, 12760, 13456, 15805, 16820, 18502, 19184, 23980, 25288, 25520, 31610, 33640, 34771, 37004, 46255, 47960, 50576, 63220, 67280, 69542, 74008, 91669, 92510, 95920, 126440, 139084, 148016, 173855, 183338, 185020, 252880, 278168, 347710, 366676, 370040, 458345, 556336, 695420, 733352, 740080, 916690, 1008359, 1390840, 1466704, 1833380, 2016718, 2781680, 3666760, 4033436, 5041795, 7333520, 8066872, 10083590, 16133744, 20167180, 40334360, 80668720]

約数ペア:

[(1, 80668720), (2, 40334360), (4, 20167180), (5, 16133744), (8, 10083590), (10, 8066872), (11, 7333520), (16, 5041795), (20, 4033436), (22, 3666760), (29, 2781680), (40, 2016718), (44, 1833380), (55, 1466704), (58, 1390840), (80, 1008359), (88, 916690), (109, 740080), (110, 733352), (116, 695420), (145, 556336), (176, 458345), (218, 370040), (220, 366676), (232, 347710), (290, 278168), (319, 252880), (436, 185020), (440, 183338), (464, 173855), (545, 148016), (580, 139084), (638, 126440), (841, 95920), (872, 92510), (880, 91669), (1090, 74008), (1160, 69542), (1199, 67280), (1276, 63220), (1595, 50576), (1682, 47960), (1744, 46255), (2180, 37004), (2320, 34771), (2398, 33640), (2552, 31610), (3161, 25520), (3190, 25288), (3364, 23980), (4205, 19184), (4360, 18502), (4796, 16820), (5104, 15805), (5995, 13456), (6322, 12760), (6380, 12644), (6728, 11990), (8410, 9592), (8720, 9251)]