20286156940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{1406807}}^1$

素因数の和:1406926

約数の個数: 48

約数和(自身を含む): 49159498752

約数和(自身を除く): 28873341812

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 103, 140, 206, 412, 515, 721, 1030, 1442, 2060, 2884, 3605, 7210, 14420, 1406807, 2813614, 5627228, 7034035, 9847649, 14068070, 19695298, 28136140, 39390596, 49238245, 98476490, 144901121, 196952980, 289802242, 579604484, 724505605, 1014307847, 1449011210, 2028615694, 2898022420, 4057231388, 5071539235, 10143078470, 20286156940]

約数ペア:

[(1, 20286156940), (2, 10143078470), (4, 5071539235), (5, 4057231388), (7, 2898022420), (10, 2028615694), (14, 1449011210), (20, 1014307847), (28, 724505605), (35, 579604484), (70, 289802242), (103, 196952980), (140, 144901121), (206, 98476490), (412, 49238245), (515, 39390596), (721, 28136140), (1030, 19695298), (1442, 14068070), (2060, 9847649), (2884, 7034035), (3605, 5627228), (7210, 2813614), (14420, 1406807)]