20772080

素因数分解:

$2^4\times 5^1\times 7^3\times {\mathrm{757}}^1$

素因数の和:791

約数の個数: 80

約数和(自身を含む): 56395200

約数和(自身を除く): 35623120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 343, 392, 490, 560, 686, 757, 784, 980, 1372, 1514, 1715, 1960, 2744, 3028, 3430, 3785, 3920, 5299, 5488, 6056, 6860, 7570, 10598, 12112, 13720, 15140, 21196, 26495, 27440, 30280, 37093, 42392, 52990, 60560, 74186, 84784, 105980, 148372, 185465, 211960, 259651, 296744, 370930, 423920, 519302, 593488, 741860, 1038604, 1298255, 1483720, 2077208, 2596510, 2967440, 4154416, 5193020, 10386040, 20772080]

約数ペア:

[(1, 20772080), (2, 10386040), (4, 5193020), (5, 4154416), (7, 2967440), (8, 2596510), (10, 2077208), (14, 1483720), (16, 1298255), (20, 1038604), (28, 741860), (35, 593488), (40, 519302), (49, 423920), (56, 370930), (70, 296744), (80, 259651), (98, 211960), (112, 185465), (140, 148372), (196, 105980), (245, 84784), (280, 74186), (343, 60560), (392, 52990), (490, 42392), (560, 37093), (686, 30280), (757, 27440), (784, 26495), (980, 21196), (1372, 15140), (1514, 13720), (1715, 12112), (1960, 10598), (2744, 7570), (3028, 6860), (3430, 6056), (3785, 5488), (3920, 5299)]