20195840

素因数分解:

$2^9\times 5^1\times 7^3\times {\mathrm{23}}^1$

素因数の和:67

約数の個数: 160

約数和(自身を含む): 58924800

約数和(自身を除く): 38728960

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, 1120, 1127, 1280, 1288, 1372, 1472, 1568, 1610, 1715, 1792, 1840, 1960, 2240, 2254, 2560, 2576, 2744, 2944, 3136, 3220, 3430, 3584, 3680, 3920, 4480, 4508, 5152, 5488, 5635, 5888, 6272, 6440, 6860, 7360, 7840, 7889, 8960, 9016, 10304, 10976, 11270, 11776, 12544, 12880, 13720, 14720, 15680, 15778, 17920, 18032, 20608, 21952, 22540, 25088, 25760, 27440, 29440, 31360, 31556, 36064, 39445, 41216, 43904, 45080, 51520, 54880, 58880, 62720, 63112, 72128, 78890, 82432, 87808, 90160, 103040, 109760, 125440, 126224, 144256, 157780, 175616, 180320, 206080, 219520, 252448, 288512, 315560, 360640, 412160, 439040, 504896, 577024, 631120, 721280, 878080, 1009792, 1262240, 1442560, 2019584, 2524480, 2885120, 4039168, 5048960, 10097920, 20195840]

約数ペア:

[(1, 20195840), (2, 10097920), (4, 5048960), (5, 4039168), (7, 2885120), (8, 2524480), (10, 2019584), (14, 1442560), (16, 1262240), (20, 1009792), (23, 878080), (28, 721280), (32, 631120), (35, 577024), (40, 504896), (46, 439040), (49, 412160), (56, 360640), (64, 315560), (70, 288512), (80, 252448), (92, 219520), (98, 206080), (112, 180320), (115, 175616), (128, 157780), (140, 144256), (160, 126224), (161, 125440), (184, 109760), (196, 103040), (224, 90160), (230, 87808), (245, 82432), (256, 78890), (280, 72128), (320, 63112), (322, 62720), (343, 58880), (368, 54880), (392, 51520), (448, 45080), (460, 43904), (490, 41216), (512, 39445), (560, 36064), (640, 31556), (644, 31360), (686, 29440), (736, 27440), (784, 25760), (805, 25088), (896, 22540), (920, 21952), (980, 20608), (1120, 18032), (1127, 17920), (1280, 15778), (1288, 15680), (1372, 14720), (1472, 13720), (1568, 12880), (1610, 12544), (1715, 11776), (1792, 11270), (1840, 10976), (1960, 10304), (2240, 9016), (2254, 8960), (2560, 7889), (2576, 7840), (2744, 7360), (2944, 6860), (3136, 6440), (3220, 6272), (3430, 5888), (3584, 5635), (3680, 5488), (3920, 5152), (4480, 4508)]