20708640

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{197}}^1$

素因数の和:291

約数の個数: 144

約数和(自身を含む): 71999928

約数和(自身を除く): 51291288

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, 72, 73, 80, 90, 96, 120, 144, 146, 160, 180, 197, 219, 240, 288, 292, 360, 365, 394, 438, 480, 584, 591, 657, 720, 730, 788, 876, 985, 1095, 1168, 1182, 1314, 1440, 1460, 1576, 1752, 1773, 1970, 2190, 2336, 2364, 2628, 2920, 2955, 3152, 3285, 3504, 3546, 3940, 4380, 4728, 5256, 5840, 5910, 6304, 6570, 7008, 7092, 7880, 8760, 8865, 9456, 10512, 11680, 11820, 13140, 14184, 14381, 15760, 17520, 17730, 18912, 21024, 23640, 26280, 28368, 28762, 31520, 35040, 35460, 43143, 47280, 52560, 56736, 57524, 70920, 71905, 86286, 94560, 105120, 115048, 129429, 141840, 143810, 172572, 215715, 230096, 258858, 283680, 287620, 345144, 431430, 460192, 517716, 575240, 647145, 690288, 862860, 1035432, 1150480, 1294290, 1380576, 1725720, 2070864, 2300960, 2588580, 3451440, 4141728, 5177160, 6902880, 10354320, 20708640]

約数ペア:

[(1, 20708640), (2, 10354320), (3, 6902880), (4, 5177160), (5, 4141728), (6, 3451440), (8, 2588580), (9, 2300960), (10, 2070864), (12, 1725720), (15, 1380576), (16, 1294290), (18, 1150480), (20, 1035432), (24, 862860), (30, 690288), (32, 647145), (36, 575240), (40, 517716), (45, 460192), (48, 431430), (60, 345144), (72, 287620), (73, 283680), (80, 258858), (90, 230096), (96, 215715), (120, 172572), (144, 143810), (146, 141840), (160, 129429), (180, 115048), (197, 105120), (219, 94560), (240, 86286), (288, 71905), (292, 70920), (360, 57524), (365, 56736), (394, 52560), (438, 47280), (480, 43143), (584, 35460), (591, 35040), (657, 31520), (720, 28762), (730, 28368), (788, 26280), (876, 23640), (985, 21024), (1095, 18912), (1168, 17730), (1182, 17520), (1314, 15760), (1440, 14381), (1460, 14184), (1576, 13140), (1752, 11820), (1773, 11680), (1970, 10512), (2190, 9456), (2336, 8865), (2364, 8760), (2628, 7880), (2920, 7092), (2955, 7008), (3152, 6570), (3285, 6304), (3504, 5910), (3546, 5840), (3940, 5256), (4380, 4728)]