128491920

素因数分解:

$2^4\times 3^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{251}}^1$

素因数の和:355

約数の個数: 200

約数和(自身を含む): 453720960

約数和(自身を除く): 325229040

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, 79, 80, 81, 90, 108, 120, 135, 144, 158, 162, 180, 216, 237, 240, 251, 270, 316, 324, 360, 395, 405, 432, 474, 502, 540, 632, 648, 711, 720, 753, 790, 810, 948, 1004, 1080, 1185, 1255, 1264, 1296, 1422, 1506, 1580, 1620, 1896, 2008, 2133, 2160, 2259, 2370, 2510, 2844, 3012, 3160, 3240, 3555, 3765, 3792, 4016, 4266, 4518, 4740, 5020, 5688, 6024, 6320, 6399, 6480, 6777, 7110, 7530, 8532, 9036, 9480, 10040, 10665, 11295, 11376, 12048, 12798, 13554, 14220, 15060, 17064, 18072, 18960, 19829, 20080, 20331, 21330, 22590, 25596, 27108, 28440, 30120, 31995, 33885, 34128, 36144, 39658, 40662, 42660, 45180, 51192, 54216, 56880, 59487, 60240, 63990, 67770, 79316, 81324, 85320, 90360, 99145, 101655, 102384, 108432, 118974, 127980, 135540, 158632, 162648, 170640, 178461, 180720, 198290, 203310, 237948, 255960, 271080, 297435, 317264, 325296, 356922, 396580, 406620, 475896, 511920, 535383, 542160, 594870, 713844, 793160, 813240, 892305, 951792, 1070766, 1189740, 1427688, 1586320, 1606149, 1626480, 1784610, 2141532, 2379480, 2676915, 2855376, 3212298, 3569220, 4283064, 4758960, 5353830, 6424596, 7138440, 8030745, 8566128, 10707660, 12849192, 14276880, 16061490, 21415320, 25698384, 32122980, 42830640, 64245960, 128491920]

約数ペア:

[(1, 128491920), (2, 64245960), (3, 42830640), (4, 32122980), (5, 25698384), (6, 21415320), (8, 16061490), (9, 14276880), (10, 12849192), (12, 10707660), (15, 8566128), (16, 8030745), (18, 7138440), (20, 6424596), (24, 5353830), (27, 4758960), (30, 4283064), (36, 3569220), (40, 3212298), (45, 2855376), (48, 2676915), (54, 2379480), (60, 2141532), (72, 1784610), (79, 1626480), (80, 1606149), (81, 1586320), (90, 1427688), (108, 1189740), (120, 1070766), (135, 951792), (144, 892305), (158, 813240), (162, 793160), (180, 713844), (216, 594870), (237, 542160), (240, 535383), (251, 511920), (270, 475896), (316, 406620), (324, 396580), (360, 356922), (395, 325296), (405, 317264), (432, 297435), (474, 271080), (502, 255960), (540, 237948), (632, 203310), (648, 198290), (711, 180720), (720, 178461), (753, 170640), (790, 162648), (810, 158632), (948, 135540), (1004, 127980), (1080, 118974), (1185, 108432), (1255, 102384), (1264, 101655), (1296, 99145), (1422, 90360), (1506, 85320), (1580, 81324), (1620, 79316), (1896, 67770), (2008, 63990), (2133, 60240), (2160, 59487), (2259, 56880), (2370, 54216), (2510, 51192), (2844, 45180), (3012, 42660), (3160, 40662), (3240, 39658), (3555, 36144), (3765, 34128), (3792, 33885), (4016, 31995), (4266, 30120), (4518, 28440), (4740, 27108), (5020, 25596), (5688, 22590), (6024, 21330), (6320, 20331), (6399, 20080), (6480, 19829), (6777, 18960), (7110, 18072), (7530, 17064), (8532, 15060), (9036, 14220), (9480, 13554), (10040, 12798), (10665, 12048), (11295, 11376)]