20531556

素因数分解:

$2^2\times 3^7\times {\mathrm{2347}}^1$

素因数の和:2372

約数の個数: 48

約数和(自身を含む): 53910080

約数和(自身を除く): 33378524

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, 243, 324, 486, 729, 972, 1458, 2187, 2347, 2916, 4374, 4694, 7041, 8748, 9388, 14082, 21123, 28164, 42246, 63369, 84492, 126738, 190107, 253476, 380214, 570321, 760428, 1140642, 1710963, 2281284, 3421926, 5132889, 6843852, 10265778, 20531556]

約数ペア:

[(1, 20531556), (2, 10265778), (3, 6843852), (4, 5132889), (6, 3421926), (9, 2281284), (12, 1710963), (18, 1140642), (27, 760428), (36, 570321), (54, 380214), (81, 253476), (108, 190107), (162, 126738), (243, 84492), (324, 63369), (486, 42246), (729, 28164), (972, 21123), (1458, 14082), (2187, 9388), (2347, 8748), (2916, 7041), (4374, 4694)]