19399247

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{311}}^1$

素因数の和:411

約数の個数: 24

約数和(自身を含む): 24186240

約数和(自身を除く): 4786993

約数列:

[1, 7, 19, 49, 67, 133, 311, 469, 931, 1273, 2177, 3283, 5909, 8911, 15239, 20837, 41363, 62377, 145859, 289541, 395903, 1021013, 2771321, 19399247]

約数ペア:

[(1, 19399247), (7, 2771321), (19, 1021013), (49, 395903), (67, 289541), (133, 145859), (311, 62377), (469, 41363), (931, 20837), (1273, 15239), (2177, 8911), (3283, 5909)]