81669120

素因数分解:

$2^{10}\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{409}}^1$

素因数の和:450

約数の個数: 176

約数和(自身を含む): 281994720

約数和(自身を除く): 200325600

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 48, 52, 60, 64, 65, 78, 80, 96, 104, 120, 128, 130, 156, 160, 192, 195, 208, 240, 256, 260, 312, 320, 384, 390, 409, 416, 480, 512, 520, 624, 640, 768, 780, 818, 832, 960, 1024, 1040, 1227, 1248, 1280, 1536, 1560, 1636, 1664, 1920, 2045, 2080, 2454, 2496, 2560, 3072, 3120, 3272, 3328, 3840, 4090, 4160, 4908, 4992, 5120, 5317, 6135, 6240, 6544, 6656, 7680, 8180, 8320, 9816, 9984, 10634, 12270, 12480, 13088, 13312, 15360, 15951, 16360, 16640, 19632, 19968, 21268, 24540, 24960, 26176, 26585, 31902, 32720, 33280, 39264, 39936, 42536, 49080, 49920, 52352, 53170, 63804, 65440, 66560, 78528, 79755, 85072, 98160, 99840, 104704, 106340, 127608, 130880, 157056, 159510, 170144, 196320, 199680, 209408, 212680, 255216, 261760, 314112, 319020, 340288, 392640, 418816, 425360, 510432, 523520, 628224, 638040, 680576, 785280, 850720, 1020864, 1047040, 1256448, 1276080, 1361152, 1570560, 1701440, 2041728, 2094080, 2552160, 2722304, 3141120, 3402880, 4083456, 5104320, 5444608, 6282240, 6805760, 8166912, 10208640, 13611520, 16333824, 20417280, 27223040, 40834560, 81669120]

約数ペア:

[(1, 81669120), (2, 40834560), (3, 27223040), (4, 20417280), (5, 16333824), (6, 13611520), (8, 10208640), (10, 8166912), (12, 6805760), (13, 6282240), (15, 5444608), (16, 5104320), (20, 4083456), (24, 3402880), (26, 3141120), (30, 2722304), (32, 2552160), (39, 2094080), (40, 2041728), (48, 1701440), (52, 1570560), (60, 1361152), (64, 1276080), (65, 1256448), (78, 1047040), (80, 1020864), (96, 850720), (104, 785280), (120, 680576), (128, 638040), (130, 628224), (156, 523520), (160, 510432), (192, 425360), (195, 418816), (208, 392640), (240, 340288), (256, 319020), (260, 314112), (312, 261760), (320, 255216), (384, 212680), (390, 209408), (409, 199680), (416, 196320), (480, 170144), (512, 159510), (520, 157056), (624, 130880), (640, 127608), (768, 106340), (780, 104704), (818, 99840), (832, 98160), (960, 85072), (1024, 79755), (1040, 78528), (1227, 66560), (1248, 65440), (1280, 63804), (1536, 53170), (1560, 52352), (1636, 49920), (1664, 49080), (1920, 42536), (2045, 39936), (2080, 39264), (2454, 33280), (2496, 32720), (2560, 31902), (3072, 26585), (3120, 26176), (3272, 24960), (3328, 24540), (3840, 21268), (4090, 19968), (4160, 19632), (4908, 16640), (4992, 16360), (5120, 15951), (5317, 15360), (6135, 13312), (6240, 13088), (6544, 12480), (6656, 12270), (7680, 10634), (8180, 9984), (8320, 9816)]