31781889

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{193}}^1$

素因数の和:331

約数の個数: 40

約数和(自身を含む): 50703840

約数和(自身を除く): 18921951

約数列:

[1, 3, 9, 19, 27, 57, 81, 107, 171, 193, 321, 513, 579, 963, 1539, 1737, 2033, 2889, 3667, 5211, 6099, 8667, 11001, 15633, 18297, 20651, 33003, 54891, 61953, 99009, 164673, 185859, 297027, 392369, 557577, 1177107, 1672731, 3531321, 10593963, 31781889]

約数ペア:

[(1, 31781889), (3, 10593963), (9, 3531321), (19, 1672731), (27, 1177107), (57, 557577), (81, 392369), (107, 297027), (171, 185859), (193, 164673), (321, 99009), (513, 61953), (579, 54891), (963, 33003), (1539, 20651), (1737, 18297), (2033, 15633), (2889, 11001), (3667, 8667), (5211, 6099)]