40577480

素因数分解:

$2^3\times 5^1\times {\mathrm{509}}^1\times {\mathrm{1993}}^1$

素因数の和:2513

約数の個数: 32

約数和(自身を含む): 91524600

約数和(自身を除く): 50947120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 509, 1018, 1993, 2036, 2545, 3986, 4072, 5090, 7972, 9965, 10180, 15944, 19930, 20360, 39860, 79720, 1014437, 2028874, 4057748, 5072185, 8115496, 10144370, 20288740, 40577480]

約数ペア:

[(1, 40577480), (2, 20288740), (4, 10144370), (5, 8115496), (8, 5072185), (10, 4057748), (20, 2028874), (40, 1014437), (509, 79720), (1018, 39860), (1993, 20360), (2036, 19930), (2545, 15944), (3986, 10180), (4072, 9965), (5090, 7972)]