20628965

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{463}}^1$

素因数の和:561

約数の個数: 32

約数和(自身を含む): 30289920

約数和(自身を除く): 9660955

約数列:

[1, 5, 7, 19, 35, 67, 95, 133, 335, 463, 469, 665, 1273, 2315, 2345, 3241, 6365, 8797, 8911, 16205, 31021, 43985, 44555, 61579, 155105, 217147, 307895, 589399, 1085735, 2946995, 4125793, 20628965]

約数ペア:

[(1, 20628965), (5, 4125793), (7, 2946995), (19, 1085735), (35, 589399), (67, 307895), (95, 217147), (133, 155105), (335, 61579), (463, 44555), (469, 43985), (665, 31021), (1273, 16205), (2315, 8911), (2345, 8797), (3241, 6365)]