20996220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{49991}}^1$

素因数の和:50010

約数の個数: 48

約数和(自身を含む): 67189248

約数和(自身を除く): 46193028

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 49991, 99982, 149973, 199964, 249955, 299946, 349937, 499910, 599892, 699874, 749865, 999820, 1049811, 1399748, 1499730, 1749685, 2099622, 2999460, 3499370, 4199244, 5249055, 6998740, 10498110, 20996220]

約数ペア:

[(1, 20996220), (2, 10498110), (3, 6998740), (4, 5249055), (5, 4199244), (6, 3499370), (7, 2999460), (10, 2099622), (12, 1749685), (14, 1499730), (15, 1399748), (20, 1049811), (21, 999820), (28, 749865), (30, 699874), (35, 599892), (42, 499910), (60, 349937), (70, 299946), (84, 249955), (105, 199964), (140, 149973), (210, 99982), (420, 49991)]