20163741940

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{5117701}}^1$

素因数の和:5117907

約数の個数: 24

約数和(自身を含む): 42558809832

約数和(自身を除く): 22395067892

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 5117701, 10235402, 20470804, 25588505, 51177010, 102354020, 1008187097, 2016374194, 4032748388, 5040935485, 10081870970, 20163741940]

約数ペア:

[(1, 20163741940), (2, 10081870970), (4, 5040935485), (5, 4032748388), (10, 2016374194), (20, 1008187097), (197, 102354020), (394, 51177010), (788, 25588505), (985, 20470804), (1970, 10235402), (3940, 5117701)]