1991180800

素因数分解:

$2^9\times 5^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{313}}^1$

素因数の和:419

約数の個数: 240

約数和(自身を含む): 5735740032

約数和(自身を除く): 3744559232

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 50, 56, 64, 70, 71, 80, 100, 112, 128, 140, 142, 160, 175, 200, 224, 256, 280, 284, 313, 320, 350, 355, 400, 448, 497, 512, 560, 568, 626, 640, 700, 710, 800, 896, 994, 1120, 1136, 1252, 1280, 1400, 1420, 1565, 1600, 1775, 1792, 1988, 2191, 2240, 2272, 2485, 2504, 2560, 2800, 2840, 3130, 3200, 3550, 3584, 3976, 4382, 4480, 4544, 4970, 5008, 5600, 5680, 6260, 6400, 7100, 7825, 7952, 8764, 8960, 9088, 9940, 10016, 10955, 11200, 11360, 12425, 12520, 12800, 14200, 15650, 15904, 17528, 17920, 18176, 19880, 20032, 21910, 22223, 22400, 22720, 24850, 25040, 28400, 31300, 31808, 35056, 36352, 39760, 40064, 43820, 44446, 44800, 45440, 49700, 50080, 54775, 56800, 62600, 63616, 70112, 79520, 80128, 87640, 88892, 89600, 90880, 99400, 100160, 109550, 111115, 113600, 125200, 127232, 140224, 155561, 159040, 160256, 175280, 177784, 181760, 198800, 200320, 219100, 222230, 227200, 250400, 254464, 280448, 311122, 318080, 350560, 355568, 397600, 400640, 438200, 444460, 454400, 500800, 555575, 560896, 622244, 636160, 701120, 711136, 777805, 795200, 801280, 876400, 888920, 908800, 1001600, 1111150, 1121792, 1244488, 1272320, 1402240, 1422272, 1555610, 1590400, 1752800, 1777840, 2003200, 2222300, 2488976, 2804480, 2844544, 3111220, 3180800, 3505600, 3555680, 3889025, 4006400, 4444600, 4977952, 5608960, 5689088, 6222440, 6361600, 7011200, 7111360, 7778050, 8889200, 9955904, 11378176, 12444880, 14022400, 14222720, 15556100, 17778400, 19911808, 24889760, 28044800, 28445440, 31112200, 35556800, 39823616, 49779520, 56890880, 62224400, 71113600, 79647232, 99559040, 124448800, 142227200, 199118080, 248897600, 284454400, 398236160, 497795200, 995590400, 1991180800]

約数ペア:

[(1, 1991180800), (2, 995590400), (4, 497795200), (5, 398236160), (7, 284454400), (8, 248897600), (10, 199118080), (14, 142227200), (16, 124448800), (20, 99559040), (25, 79647232), (28, 71113600), (32, 62224400), (35, 56890880), (40, 49779520), (50, 39823616), (56, 35556800), (64, 31112200), (70, 28445440), (71, 28044800), (80, 24889760), (100, 19911808), (112, 17778400), (128, 15556100), (140, 14222720), (142, 14022400), (160, 12444880), (175, 11378176), (200, 9955904), (224, 8889200), (256, 7778050), (280, 7111360), (284, 7011200), (313, 6361600), (320, 6222440), (350, 5689088), (355, 5608960), (400, 4977952), (448, 4444600), (497, 4006400), (512, 3889025), (560, 3555680), (568, 3505600), (626, 3180800), (640, 3111220), (700, 2844544), (710, 2804480), (800, 2488976), (896, 2222300), (994, 2003200), (1120, 1777840), (1136, 1752800), (1252, 1590400), (1280, 1555610), (1400, 1422272), (1420, 1402240), (1565, 1272320), (1600, 1244488), (1775, 1121792), (1792, 1111150), (1988, 1001600), (2191, 908800), (2240, 888920), (2272, 876400), (2485, 801280), (2504, 795200), (2560, 777805), (2800, 711136), (2840, 701120), (3130, 636160), (3200, 622244), (3550, 560896), (3584, 555575), (3976, 500800), (4382, 454400), (4480, 444460), (4544, 438200), (4970, 400640), (5008, 397600), (5600, 355568), (5680, 350560), (6260, 318080), (6400, 311122), (7100, 280448), (7825, 254464), (7952, 250400), (8764, 227200), (8960, 222230), (9088, 219100), (9940, 200320), (10016, 198800), (10955, 181760), (11200, 177784), (11360, 175280), (12425, 160256), (12520, 159040), (12800, 155561), (14200, 140224), (15650, 127232), (15904, 125200), (17528, 113600), (17920, 111115), (18176, 109550), (19880, 100160), (20032, 99400), (21910, 90880), (22223, 89600), (22400, 88892), (22720, 87640), (24850, 80128), (25040, 79520), (28400, 70112), (31300, 63616), (31808, 62600), (35056, 56800), (36352, 54775), (39760, 50080), (40064, 49700), (43820, 45440), (44446, 44800)]