20551680

素因数分解:

$2^{11}\times 3^2\times 5^1\times {\mathrm{223}}^1$

素因数の和:256

約数の個数: 144

約数和(自身を含む): 71547840

約数和(自身を除く): 50996160

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, 223, 240, 256, 288, 320, 360, 384, 446, 480, 512, 576, 640, 669, 720, 768, 892, 960, 1024, 1115, 1152, 1280, 1338, 1440, 1536, 1784, 1920, 2007, 2048, 2230, 2304, 2560, 2676, 2880, 3072, 3345, 3568, 3840, 4014, 4460, 4608, 5120, 5352, 5760, 6144, 6690, 7136, 7680, 8028, 8920, 9216, 10035, 10240, 10704, 11520, 13380, 14272, 15360, 16056, 17840, 18432, 20070, 21408, 23040, 26760, 28544, 30720, 32112, 35680, 40140, 42816, 46080, 53520, 57088, 64224, 71360, 80280, 85632, 92160, 107040, 114176, 128448, 142720, 160560, 171264, 214080, 228352, 256896, 285440, 321120, 342528, 428160, 456704, 513792, 570880, 642240, 685056, 856320, 1027584, 1141760, 1284480, 1370112, 1712640, 2055168, 2283520, 2568960, 3425280, 4110336, 5137920, 6850560, 10275840, 20551680]

約数ペア:

[(1, 20551680), (2, 10275840), (3, 6850560), (4, 5137920), (5, 4110336), (6, 3425280), (8, 2568960), (9, 2283520), (10, 2055168), (12, 1712640), (15, 1370112), (16, 1284480), (18, 1141760), (20, 1027584), (24, 856320), (30, 685056), (32, 642240), (36, 570880), (40, 513792), (45, 456704), (48, 428160), (60, 342528), (64, 321120), (72, 285440), (80, 256896), (90, 228352), (96, 214080), (120, 171264), (128, 160560), (144, 142720), (160, 128448), (180, 114176), (192, 107040), (223, 92160), (240, 85632), (256, 80280), (288, 71360), (320, 64224), (360, 57088), (384, 53520), (446, 46080), (480, 42816), (512, 40140), (576, 35680), (640, 32112), (669, 30720), (720, 28544), (768, 26760), (892, 23040), (960, 21408), (1024, 20070), (1115, 18432), (1152, 17840), (1280, 16056), (1338, 15360), (1440, 14272), (1536, 13380), (1784, 11520), (1920, 10704), (2007, 10240), (2048, 10035), (2230, 9216), (2304, 8920), (2560, 8028), (2676, 7680), (2880, 7136), (3072, 6690), (3345, 6144), (3568, 5760), (3840, 5352), (4014, 5120), (4460, 4608)]