28150787

素因数分解:

$7^1\times {\mathrm{67}}^1\times {\mathrm{193}}^1\times {\mathrm{311}}^1$

素因数の和:578

約数の個数: 16

約数和(自身を含む): 32927232

約数和(自身を除く): 4776445

約数列:

[1, 7, 67, 193, 311, 469, 1351, 2177, 12931, 20837, 60023, 90517, 145859, 420161, 4021541, 28150787]

約数ペア:

[(1, 28150787), (7, 4021541), (67, 420161), (193, 145859), (311, 90517), (469, 60023), (1351, 20837), (2177, 12931)]