645120

素因数分解:

$2^{11}\times 3^2\times 5^1\times 7^1$

素因数の和:40

約数の個数: 144

約数和(自身を含む): 2555280

約数和(自身を除く): 1910160

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, 4480, 4608, 5040, 5120, 5376, 5760, 6144, 6720, 7168, 7680, 8064, 8960, 9216, 10080, 10240, 10752, 11520, 13440, 14336, 15360, 16128, 17920, 18432, 20160, 21504, 23040, 26880, 30720, 32256, 35840, 40320, 43008, 46080, 53760, 64512, 71680, 80640, 92160, 107520, 129024, 161280, 215040, 322560, 645120]

約数ペア:

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