71311989

素因数分解:

$3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{179}}^1\times {\mathrm{311}}^1$

素因数の和:561

約数の個数: 32

約数和(自身を含む): 111421440

約数和(自身を除く): 40109451

約数列:

[1, 3, 7, 21, 61, 179, 183, 311, 427, 537, 933, 1253, 1281, 2177, 3759, 6531, 10919, 18971, 32757, 55669, 56913, 76433, 132797, 167007, 229299, 389683, 398391, 1169049, 3395809, 10187427, 23770663, 71311989]

約数ペア:

[(1, 71311989), (3, 23770663), (7, 10187427), (21, 3395809), (61, 1169049), (179, 398391), (183, 389683), (311, 229299), (427, 167007), (537, 132797), (933, 76433), (1253, 56913), (1281, 55669), (2177, 32757), (3759, 18971), (6531, 10919)]