20608749

素因数分解:

$3^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1913}}^1$

素因数の和:1951

約数の個数: 40

約数和(自身を含む): 37055040

約数和(自身を除く): 16446291

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 81, 133, 171, 189, 399, 513, 567, 1197, 1539, 1913, 3591, 5739, 10773, 13391, 17217, 36347, 40173, 51651, 109041, 120519, 154953, 254429, 327123, 361557, 763287, 981369, 1084671, 2289861, 2944107, 6869583, 20608749]

約数ペア:

[(1, 20608749), (3, 6869583), (7, 2944107), (9, 2289861), (19, 1084671), (21, 981369), (27, 763287), (57, 361557), (63, 327123), (81, 254429), (133, 154953), (171, 120519), (189, 109041), (399, 51651), (513, 40173), (567, 36347), (1197, 17217), (1539, 13391), (1913, 10773), (3591, 5739)]