20973540

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{49937}}^1$

素因数の和:49956

約数の個数: 48

約数和(自身を含む): 67116672

約数和(自身を除く): 46143132

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, 49937, 99874, 149811, 199748, 249685, 299622, 349559, 499370, 599244, 699118, 749055, 998740, 1048677, 1398236, 1498110, 1747795, 2097354, 2996220, 3495590, 4194708, 5243385, 6991180, 10486770, 20973540]

約数ペア:

[(1, 20973540), (2, 10486770), (3, 6991180), (4, 5243385), (5, 4194708), (6, 3495590), (7, 2996220), (10, 2097354), (12, 1747795), (14, 1498110), (15, 1398236), (20, 1048677), (21, 998740), (28, 749055), (30, 699118), (35, 599244), (42, 499370), (60, 349559), (70, 299622), (84, 249685), (105, 199748), (140, 149811), (210, 99874), (420, 49937)]