1290240

素因数分解:

$2^{12}\times 3^2\times 5^1\times 7^1$

素因数の和:42

約数の個数: 156

約数和(自身を含む): 5111184

約数和(自身を除く): 3820944

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, 128, 140, 144, 160, 168, 180, 192, 210, 224, 240, 252, 256, 280, 288, 315, 320, 336, 360, 384, 420, 448, 480, 504, 512, 560, 576, 630, 640, 672, 720, 768, 840, 896, 960, 1008, 1024, 1120, 1152, 1260, 1280, 1344, 1440, 1536, 1680, 1792, 1920, 2016, 2048, 2240, 2304, 2520, 2560, 2688, 2880, 3072, 3360, 3584, 3840, 4032, 4096, 4480, 4608, 5040, 5120, 5376, 5760, 6144, 6720, 7168, 7680, 8064, 8960, 9216, 10080, 10240, 10752, 11520, 12288, 13440, 14336, 15360, 16128, 17920, 18432, 20160, 20480, 21504, 23040, 26880, 28672, 30720, 32256, 35840, 36864, 40320, 43008, 46080, 53760, 61440, 64512, 71680, 80640, 86016, 92160, 107520, 129024, 143360, 161280, 184320, 215040, 258048, 322560, 430080, 645120, 1290240]

約数ペア:

[(1, 1290240), (2, 645120), (3, 430080), (4, 322560), (5, 258048), (6, 215040), (7, 184320), (8, 161280), (9, 143360), (10, 129024), (12, 107520), (14, 92160), (15, 86016), (16, 80640), (18, 71680), (20, 64512), (21, 61440), (24, 53760), (28, 46080), (30, 43008), (32, 40320), (35, 36864), (36, 35840), (40, 32256), (42, 30720), (45, 28672), (48, 26880), (56, 23040), (60, 21504), (63, 20480), (64, 20160), (70, 18432), (72, 17920), (80, 16128), (84, 15360), (90, 14336), (96, 13440), (105, 12288), (112, 11520), (120, 10752), (126, 10240), (128, 10080), (140, 9216), (144, 8960), (160, 8064), (168, 7680), (180, 7168), (192, 6720), (210, 6144), (224, 5760), (240, 5376), (252, 5120), (256, 5040), (280, 4608), (288, 4480), (315, 4096), (320, 4032), (336, 3840), (360, 3584), (384, 3360), (420, 3072), (448, 2880), (480, 2688), (504, 2560), (512, 2520), (560, 2304), (576, 2240), (630, 2048), (640, 2016), (672, 1920), (720, 1792), (768, 1680), (840, 1536), (896, 1440), (960, 1344), (1008, 1280), (1024, 1260), (1120, 1152)]