8691640

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{1103}}^1$

素因数の和:1311

約数の個数: 32

約数和(自身を含む): 19673280

約数和(自身を除く): 10981640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1103, 1576, 1970, 2206, 3940, 4412, 5515, 7880, 8824, 11030, 22060, 44120, 217291, 434582, 869164, 1086455, 1738328, 2172910, 4345820, 8691640]

約数ペア:

[(1, 8691640), (2, 4345820), (4, 2172910), (5, 1738328), (8, 1086455), (10, 869164), (20, 434582), (40, 217291), (197, 44120), (394, 22060), (788, 11030), (985, 8824), (1103, 7880), (1576, 5515), (1970, 4412), (2206, 3940)]