20782360

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{9803}}^1$

素因数の和:9867

約数の個数: 32

約数和(自身を含む): 47647440

約数和(自身を除く): 26865080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 9803, 19606, 39212, 49015, 78424, 98030, 196060, 392120, 519559, 1039118, 2078236, 2597795, 4156472, 5195590, 10391180, 20782360]

約数ペア:

[(1, 20782360), (2, 10391180), (4, 5195590), (5, 4156472), (8, 2597795), (10, 2078236), (20, 1039118), (40, 519559), (53, 392120), (106, 196060), (212, 98030), (265, 78424), (424, 49015), (530, 39212), (1060, 19606), (2120, 9803)]