638043840

素因数分解:

$2^6\times 3^2\times 5^1\times 7^1\times {\mathrm{31649}}^1$

素因数の和:31679

約数の個数: 168

約数和(自身を含む): 2508199200

約数和(自身を除く): 1870155360

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 64, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 140, 144, 160, 168, 180, 192, 210, 224, 240, 252, 280, 288, 315, 320, 336, 360, 420, 448, 480, 504, 560, 576, 630, 672, 720, 840, 960, 1008, 1120, 1260, 1344, 1440, 1680, 2016, 2240, 2520, 2880, 3360, 4032, 5040, 6720, 10080, 20160, 31649, 63298, 94947, 126596, 158245, 189894, 221543, 253192, 284841, 316490, 379788, 443086, 474735, 506384, 569682, 632980, 664629, 759576, 886172, 949470, 1012768, 1107715, 1139364, 1265960, 1329258, 1424205, 1519152, 1772344, 1898940, 1993887, 2025536, 2215430, 2278728, 2531920, 2658516, 2848410, 3038304, 3323145, 3544688, 3797880, 3987774, 4430860, 4557456, 5063840, 5317032, 5696820, 6076608, 6646290, 7089376, 7595760, 7975548, 8861720, 9114912, 9969435, 10127680, 10634064, 11393640, 13292580, 14178752, 15191520, 15951096, 17723440, 18229824, 19938870, 21268128, 22787280, 26585160, 30383040, 31902192, 35446880, 39877740, 42536256, 45574560, 53170320, 63804384, 70893760, 79755480, 91149120, 106340640, 127608768, 159510960, 212681280, 319021920, 638043840]

約数ペア:

[(1, 638043840), (2, 319021920), (3, 212681280), (4, 159510960), (5, 127608768), (6, 106340640), (7, 91149120), (8, 79755480), (9, 70893760), (10, 63804384), (12, 53170320), (14, 45574560), (15, 42536256), (16, 39877740), (18, 35446880), (20, 31902192), (21, 30383040), (24, 26585160), (28, 22787280), (30, 21268128), (32, 19938870), (35, 18229824), (36, 17723440), (40, 15951096), (42, 15191520), (45, 14178752), (48, 13292580), (56, 11393640), (60, 10634064), (63, 10127680), (64, 9969435), (70, 9114912), (72, 8861720), (80, 7975548), (84, 7595760), (90, 7089376), (96, 6646290), (105, 6076608), (112, 5696820), (120, 5317032), (126, 5063840), (140, 4557456), (144, 4430860), (160, 3987774), (168, 3797880), (180, 3544688), (192, 3323145), (210, 3038304), (224, 2848410), (240, 2658516), (252, 2531920), (280, 2278728), (288, 2215430), (315, 2025536), (320, 1993887), (336, 1898940), (360, 1772344), (420, 1519152), (448, 1424205), (480, 1329258), (504, 1265960), (560, 1139364), (576, 1107715), (630, 1012768), (672, 949470), (720, 886172), (840, 759576), (960, 664629), (1008, 632980), (1120, 569682), (1260, 506384), (1344, 474735), (1440, 443086), (1680, 379788), (2016, 316490), (2240, 284841), (2520, 253192), (2880, 221543), (3360, 189894), (4032, 158245), (5040, 126596), (6720, 94947), (10080, 63298), (20160, 31649)]