257617920

素因数分解:

$2^{12}\times 3^1\times 5^1\times 7^1\times {\mathrm{599}}^1$

素因数の和:638

約数の個数: 208

約数和(自身を含む): 943603200

約数和(自身を除く): 685985280

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 64, 70, 80, 84, 96, 105, 112, 120, 128, 140, 160, 168, 192, 210, 224, 240, 256, 280, 320, 336, 384, 420, 448, 480, 512, 560, 599, 640, 672, 768, 840, 896, 960, 1024, 1120, 1198, 1280, 1344, 1536, 1680, 1792, 1797, 1920, 2048, 2240, 2396, 2560, 2688, 2995, 3072, 3360, 3584, 3594, 3840, 4096, 4193, 4480, 4792, 5120, 5376, 5990, 6144, 6720, 7168, 7188, 7680, 8386, 8960, 8985, 9584, 10240, 10752, 11980, 12288, 12579, 13440, 14336, 14376, 15360, 16772, 17920, 17970, 19168, 20480, 20965, 21504, 23960, 25158, 26880, 28672, 28752, 30720, 33544, 35840, 35940, 38336, 41930, 43008, 47920, 50316, 53760, 57504, 61440, 62895, 67088, 71680, 71880, 76672, 83860, 86016, 95840, 100632, 107520, 115008, 125790, 134176, 143360, 143760, 153344, 167720, 191680, 201264, 215040, 230016, 251580, 268352, 287520, 306688, 335440, 383360, 402528, 430080, 460032, 503160, 536704, 575040, 613376, 670880, 766720, 805056, 920064, 1006320, 1073408, 1150080, 1226752, 1341760, 1533440, 1610112, 1840128, 2012640, 2146816, 2300160, 2453504, 2683520, 3066880, 3220224, 3680256, 4025280, 4293632, 4600320, 5367040, 6133760, 6440448, 7360512, 8050560, 8587264, 9200640, 10734080, 12267520, 12880896, 16101120, 17174528, 18401280, 21468160, 25761792, 32202240, 36802560, 42936320, 51523584, 64404480, 85872640, 128808960, 257617920]

約数ペア:

[(1, 257617920), (2, 128808960), (3, 85872640), (4, 64404480), (5, 51523584), (6, 42936320), (7, 36802560), (8, 32202240), (10, 25761792), (12, 21468160), (14, 18401280), (15, 17174528), (16, 16101120), (20, 12880896), (21, 12267520), (24, 10734080), (28, 9200640), (30, 8587264), (32, 8050560), (35, 7360512), (40, 6440448), (42, 6133760), (48, 5367040), (56, 4600320), (60, 4293632), (64, 4025280), (70, 3680256), (80, 3220224), (84, 3066880), (96, 2683520), (105, 2453504), (112, 2300160), (120, 2146816), (128, 2012640), (140, 1840128), (160, 1610112), (168, 1533440), (192, 1341760), (210, 1226752), (224, 1150080), (240, 1073408), (256, 1006320), (280, 920064), (320, 805056), (336, 766720), (384, 670880), (420, 613376), (448, 575040), (480, 536704), (512, 503160), (560, 460032), (599, 430080), (640, 402528), (672, 383360), (768, 335440), (840, 306688), (896, 287520), (960, 268352), (1024, 251580), (1120, 230016), (1198, 215040), (1280, 201264), (1344, 191680), (1536, 167720), (1680, 153344), (1792, 143760), (1797, 143360), (1920, 134176), (2048, 125790), (2240, 115008), (2396, 107520), (2560, 100632), (2688, 95840), (2995, 86016), (3072, 83860), (3360, 76672), (3584, 71880), (3594, 71680), (3840, 67088), (4096, 62895), (4193, 61440), (4480, 57504), (4792, 53760), (5120, 50316), (5376, 47920), (5990, 43008), (6144, 41930), (6720, 38336), (7168, 35940), (7188, 35840), (7680, 33544), (8386, 30720), (8960, 28752), (8985, 28672), (9584, 26880), (10240, 25158), (10752, 23960), (11980, 21504), (12288, 20965), (12579, 20480), (13440, 19168), (14336, 17970), (14376, 17920), (15360, 16772)]