639267840

素因数分解:

$2^{10}\times 3^2\times 5^1\times {\mathrm{13873}}^1$

素因数の和:13904

約数の個数: 132

約数和(自身を含む): 2215206084

約数和(自身を除く): 1575938244

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 64, 72, 80, 90, 96, 120, 128, 144, 160, 180, 192, 240, 256, 288, 320, 360, 384, 480, 512, 576, 640, 720, 768, 960, 1024, 1152, 1280, 1440, 1536, 1920, 2304, 2560, 2880, 3072, 3840, 4608, 5120, 5760, 7680, 9216, 11520, 13873, 15360, 23040, 27746, 41619, 46080, 55492, 69365, 83238, 110984, 124857, 138730, 166476, 208095, 221968, 249714, 277460, 332952, 416190, 443936, 499428, 554920, 624285, 665904, 832380, 887872, 998856, 1109840, 1248570, 1331808, 1664760, 1775744, 1997712, 2219680, 2497140, 2663616, 3329520, 3551488, 3995424, 4439360, 4994280, 5327232, 6659040, 7102976, 7990848, 8878720, 9988560, 10654464, 13318080, 14205952, 15981696, 17757440, 19977120, 21308928, 26636160, 31963392, 35514880, 39954240, 42617856, 53272320, 63926784, 71029760, 79908480, 106544640, 127853568, 159816960, 213089280, 319633920, 639267840]

約数ペア:

[(1, 639267840), (2, 319633920), (3, 213089280), (4, 159816960), (5, 127853568), (6, 106544640), (8, 79908480), (9, 71029760), (10, 63926784), (12, 53272320), (15, 42617856), (16, 39954240), (18, 35514880), (20, 31963392), (24, 26636160), (30, 21308928), (32, 19977120), (36, 17757440), (40, 15981696), (45, 14205952), (48, 13318080), (60, 10654464), (64, 9988560), (72, 8878720), (80, 7990848), (90, 7102976), (96, 6659040), (120, 5327232), (128, 4994280), (144, 4439360), (160, 3995424), (180, 3551488), (192, 3329520), (240, 2663616), (256, 2497140), (288, 2219680), (320, 1997712), (360, 1775744), (384, 1664760), (480, 1331808), (512, 1248570), (576, 1109840), (640, 998856), (720, 887872), (768, 832380), (960, 665904), (1024, 624285), (1152, 554920), (1280, 499428), (1440, 443936), (1536, 416190), (1920, 332952), (2304, 277460), (2560, 249714), (2880, 221968), (3072, 208095), (3840, 166476), (4608, 138730), (5120, 124857), (5760, 110984), (7680, 83238), (9216, 69365), (11520, 55492), (13873, 46080), (15360, 41619), (23040, 27746)]