161566720

素因数分解:

$2^{12}\times 5^1\times 7^3\times {\mathrm{23}}^1$

素因数の和:73

約数の個数: 208

約数和(自身を含む): 471801600

約数和(自身を除く): 310234880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 32, 35, 40, 46, 49, 56, 64, 70, 80, 92, 98, 112, 115, 128, 140, 160, 161, 184, 196, 224, 230, 245, 256, 280, 320, 322, 343, 368, 392, 448, 460, 490, 512, 560, 640, 644, 686, 736, 784, 805, 896, 920, 980, 1024, 1120, 1127, 1280, 1288, 1372, 1472, 1568, 1610, 1715, 1792, 1840, 1960, 2048, 2240, 2254, 2560, 2576, 2744, 2944, 3136, 3220, 3430, 3584, 3680, 3920, 4096, 4480, 4508, 5120, 5152, 5488, 5635, 5888, 6272, 6440, 6860, 7168, 7360, 7840, 7889, 8960, 9016, 10240, 10304, 10976, 11270, 11776, 12544, 12880, 13720, 14336, 14720, 15680, 15778, 17920, 18032, 20480, 20608, 21952, 22540, 23552, 25088, 25760, 27440, 28672, 29440, 31360, 31556, 35840, 36064, 39445, 41216, 43904, 45080, 47104, 50176, 51520, 54880, 58880, 62720, 63112, 71680, 72128, 78890, 82432, 87808, 90160, 94208, 100352, 103040, 109760, 117760, 125440, 126224, 143360, 144256, 157780, 164864, 175616, 180320, 200704, 206080, 219520, 235520, 250880, 252448, 288512, 315560, 329728, 351232, 360640, 412160, 439040, 471040, 501760, 504896, 577024, 631120, 659456, 702464, 721280, 824320, 878080, 1003520, 1009792, 1154048, 1262240, 1404928, 1442560, 1648640, 1756160, 2019584, 2308096, 2524480, 2885120, 3297280, 3512320, 4039168, 4616192, 5048960, 5770240, 7024640, 8078336, 10097920, 11540480, 16156672, 20195840, 23080960, 32313344, 40391680, 80783360, 161566720]

約数ペア:

[(1, 161566720), (2, 80783360), (4, 40391680), (5, 32313344), (7, 23080960), (8, 20195840), (10, 16156672), (14, 11540480), (16, 10097920), (20, 8078336), (23, 7024640), (28, 5770240), (32, 5048960), (35, 4616192), (40, 4039168), (46, 3512320), (49, 3297280), (56, 2885120), (64, 2524480), (70, 2308096), (80, 2019584), (92, 1756160), (98, 1648640), (112, 1442560), (115, 1404928), (128, 1262240), (140, 1154048), (160, 1009792), (161, 1003520), (184, 878080), (196, 824320), (224, 721280), (230, 702464), (245, 659456), (256, 631120), (280, 577024), (320, 504896), (322, 501760), (343, 471040), (368, 439040), (392, 412160), (448, 360640), (460, 351232), (490, 329728), (512, 315560), (560, 288512), (640, 252448), (644, 250880), (686, 235520), (736, 219520), (784, 206080), (805, 200704), (896, 180320), (920, 175616), (980, 164864), (1024, 157780), (1120, 144256), (1127, 143360), (1280, 126224), (1288, 125440), (1372, 117760), (1472, 109760), (1568, 103040), (1610, 100352), (1715, 94208), (1792, 90160), (1840, 87808), (1960, 82432), (2048, 78890), (2240, 72128), (2254, 71680), (2560, 63112), (2576, 62720), (2744, 58880), (2944, 54880), (3136, 51520), (3220, 50176), (3430, 47104), (3584, 45080), (3680, 43904), (3920, 41216), (4096, 39445), (4480, 36064), (4508, 35840), (5120, 31556), (5152, 31360), (5488, 29440), (5635, 28672), (5888, 27440), (6272, 25760), (6440, 25088), (6860, 23552), (7168, 22540), (7360, 21952), (7840, 20608), (7889, 20480), (8960, 18032), (9016, 17920), (10240, 15778), (10304, 15680), (10976, 14720), (11270, 14336), (11776, 13720), (12544, 12880)]