18617851

素因数分解:

$7^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1\times {\mathrm{257}}^1$

素因数の和:474

約数の個数: 16

約数和(自身を含む): 21795840

約数和(自身を除く): 3177989

約数列:

[1, 7, 79, 131, 257, 553, 917, 1799, 10349, 20303, 33667, 72443, 142121, 235669, 2659693, 18617851]

約数ペア:

[(1, 18617851), (7, 2659693), (79, 235669), (131, 142121), (257, 72443), (553, 33667), (917, 20303), (1799, 10349)]