205255720

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{179}}^1\times {\mathrm{263}}^1$

素因数の和:562

約数の個数: 64

約数和(自身を含む): 470448000

約数和(自身を除く): 265192280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 179, 218, 263, 358, 436, 526, 545, 716, 872, 895, 1052, 1090, 1315, 1432, 1790, 2104, 2180, 2630, 3580, 4360, 5260, 7160, 10520, 19511, 28667, 39022, 47077, 57334, 78044, 94154, 97555, 114668, 143335, 156088, 188308, 195110, 229336, 235385, 286670, 376616, 390220, 470770, 573340, 780440, 941540, 1146680, 1883080, 5131393, 10262786, 20525572, 25656965, 41051144, 51313930, 102627860, 205255720]

約数ペア:

[(1, 205255720), (2, 102627860), (4, 51313930), (5, 41051144), (8, 25656965), (10, 20525572), (20, 10262786), (40, 5131393), (109, 1883080), (179, 1146680), (218, 941540), (263, 780440), (358, 573340), (436, 470770), (526, 390220), (545, 376616), (716, 286670), (872, 235385), (895, 229336), (1052, 195110), (1090, 188308), (1315, 156088), (1432, 143335), (1790, 114668), (2104, 97555), (2180, 94154), (2630, 78044), (3580, 57334), (4360, 47077), (5260, 39022), (7160, 28667), (10520, 19511)]