18858080

素因数分解:

$2^5\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2741}}^1$

素因数の和:2799

約数の個数: 48

約数和(自身を含む): 45604944

約数和(自身を除く): 26746864

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 80, 86, 160, 172, 215, 344, 430, 688, 860, 1376, 1720, 2741, 3440, 5482, 6880, 10964, 13705, 21928, 27410, 43856, 54820, 87712, 109640, 117863, 219280, 235726, 438560, 471452, 589315, 942904, 1178630, 1885808, 2357260, 3771616, 4714520, 9429040, 18858080]

約数ペア:

[(1, 18858080), (2, 9429040), (4, 4714520), (5, 3771616), (8, 2357260), (10, 1885808), (16, 1178630), (20, 942904), (32, 589315), (40, 471452), (43, 438560), (80, 235726), (86, 219280), (160, 117863), (172, 109640), (215, 87712), (344, 54820), (430, 43856), (688, 27410), (860, 21928), (1376, 13705), (1720, 10964), (2741, 6880), (3440, 5482)]