31159791

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{131}}^1$

素因数の和:276

約数の個数: 48

約数和(自身を含む): 51891840

約数和(自身を除く): 20732049

約数列:

[1, 3, 9, 13, 19, 39, 57, 107, 117, 131, 171, 247, 321, 393, 741, 963, 1179, 1391, 1703, 2033, 2223, 2489, 4173, 5109, 6099, 7467, 12519, 14017, 15327, 18297, 22401, 26429, 32357, 42051, 79287, 97071, 126153, 182221, 237861, 266323, 291213, 546663, 798969, 1639989, 2396907, 3462199, 10386597, 31159791]

約数ペア:

[(1, 31159791), (3, 10386597), (9, 3462199), (13, 2396907), (19, 1639989), (39, 798969), (57, 546663), (107, 291213), (117, 266323), (131, 237861), (171, 182221), (247, 126153), (321, 97071), (393, 79287), (741, 42051), (963, 32357), (1179, 26429), (1391, 22401), (1703, 18297), (2033, 15327), (2223, 14017), (2489, 12519), (4173, 7467), (5109, 6099)]