205609144

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{1999}}^1$

素因数の和:2084

約数の個数: 64

約数和(自身を含む): 443520000

約数和(自身を除く): 237910856

約数列:

[1, 2, 4, 8, 13, 23, 26, 43, 46, 52, 86, 92, 104, 172, 184, 299, 344, 559, 598, 989, 1118, 1196, 1978, 1999, 2236, 2392, 3956, 3998, 4472, 7912, 7996, 12857, 15992, 25714, 25987, 45977, 51428, 51974, 85957, 91954, 102856, 103948, 171914, 183908, 207896, 343828, 367816, 597701, 687656, 1117441, 1195402, 1977011, 2234882, 2390804, 3954022, 4469764, 4781608, 7908044, 8939528, 15816088, 25701143, 51402286, 102804572, 205609144]

約数ペア:

[(1, 205609144), (2, 102804572), (4, 51402286), (8, 25701143), (13, 15816088), (23, 8939528), (26, 7908044), (43, 4781608), (46, 4469764), (52, 3954022), (86, 2390804), (92, 2234882), (104, 1977011), (172, 1195402), (184, 1117441), (299, 687656), (344, 597701), (559, 367816), (598, 343828), (989, 207896), (1118, 183908), (1196, 171914), (1978, 103948), (1999, 102856), (2236, 91954), (2392, 85957), (3956, 51974), (3998, 51428), (4472, 45977), (7912, 25987), (7996, 25714), (12857, 15992)]