21543004

素因数分解:

$2^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{12613}}^1$

素因数の和:12685

約数の個数: 24

約数和(自身を含む): 43795808

約数和(自身を除く): 22252804

約数列:

[1, 2, 4, 7, 14, 28, 61, 122, 244, 427, 854, 1708, 12613, 25226, 50452, 88291, 176582, 353164, 769393, 1538786, 3077572, 5385751, 10771502, 21543004]

約数ペア:

[(1, 21543004), (2, 10771502), (4, 5385751), (7, 3077572), (14, 1538786), (28, 769393), (61, 353164), (122, 176582), (244, 88291), (427, 50452), (854, 25226), (1708, 12613)]