20865012

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{1787}}^1$

素因数の和:1940

約数の個数: 48

約数和(自身を含む): 56071680

約数和(自身を除く): 35206668

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 139, 278, 417, 556, 834, 973, 1668, 1787, 1946, 2919, 3574, 3892, 5361, 5838, 7148, 10722, 11676, 12509, 21444, 25018, 37527, 50036, 75054, 150108, 248393, 496786, 745179, 993572, 1490358, 1738751, 2980716, 3477502, 5216253, 6955004, 10432506, 20865012]

約数ペア:

[(1, 20865012), (2, 10432506), (3, 6955004), (4, 5216253), (6, 3477502), (7, 2980716), (12, 1738751), (14, 1490358), (21, 993572), (28, 745179), (42, 496786), (84, 248393), (139, 150108), (278, 75054), (417, 50036), (556, 37527), (834, 25018), (973, 21444), (1668, 12509), (1787, 11676), (1946, 10722), (2919, 7148), (3574, 5838), (3892, 5361)]