80781840

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{149}}^1\times {\mathrm{251}}^1$

素因数の和:422

約数の個数: 160

約数和(自身を含む): 281232000

約数和(自身を除く): 200450160

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 72, 80, 90, 108, 120, 135, 144, 149, 180, 216, 240, 251, 270, 298, 360, 432, 447, 502, 540, 596, 720, 745, 753, 894, 1004, 1080, 1192, 1255, 1341, 1490, 1506, 1788, 2008, 2160, 2235, 2259, 2384, 2510, 2682, 2980, 3012, 3576, 3765, 4016, 4023, 4470, 4518, 5020, 5364, 5960, 6024, 6705, 6777, 7152, 7530, 8046, 8940, 9036, 10040, 10728, 11295, 11920, 12048, 13410, 13554, 15060, 16092, 17880, 18072, 20080, 20115, 21456, 22590, 26820, 27108, 30120, 32184, 33885, 35760, 36144, 37399, 40230, 45180, 53640, 54216, 60240, 64368, 67770, 74798, 80460, 90360, 107280, 108432, 112197, 135540, 149596, 160920, 180720, 186995, 224394, 271080, 299192, 321840, 336591, 373990, 448788, 542160, 560985, 598384, 673182, 747980, 897576, 1009773, 1121970, 1346364, 1495960, 1682955, 1795152, 2019546, 2243940, 2692728, 2991920, 3365910, 4039092, 4487880, 5048865, 5385456, 6731820, 8078184, 8975760, 10097730, 13463640, 16156368, 20195460, 26927280, 40390920, 80781840]

約数ペア:

[(1, 80781840), (2, 40390920), (3, 26927280), (4, 20195460), (5, 16156368), (6, 13463640), (8, 10097730), (9, 8975760), (10, 8078184), (12, 6731820), (15, 5385456), (16, 5048865), (18, 4487880), (20, 4039092), (24, 3365910), (27, 2991920), (30, 2692728), (36, 2243940), (40, 2019546), (45, 1795152), (48, 1682955), (54, 1495960), (60, 1346364), (72, 1121970), (80, 1009773), (90, 897576), (108, 747980), (120, 673182), (135, 598384), (144, 560985), (149, 542160), (180, 448788), (216, 373990), (240, 336591), (251, 321840), (270, 299192), (298, 271080), (360, 224394), (432, 186995), (447, 180720), (502, 160920), (540, 149596), (596, 135540), (720, 112197), (745, 108432), (753, 107280), (894, 90360), (1004, 80460), (1080, 74798), (1192, 67770), (1255, 64368), (1341, 60240), (1490, 54216), (1506, 53640), (1788, 45180), (2008, 40230), (2160, 37399), (2235, 36144), (2259, 35760), (2384, 33885), (2510, 32184), (2682, 30120), (2980, 27108), (3012, 26820), (3576, 22590), (3765, 21456), (4016, 20115), (4023, 20080), (4470, 18072), (4518, 17880), (5020, 16092), (5364, 15060), (5960, 13554), (6024, 13410), (6705, 12048), (6777, 11920), (7152, 11295), (7530, 10728), (8046, 10040), (8940, 9036)]