18639335

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{199}}^1$

素因数の和:359

約数の個数: 32

約数和(自身を含む): 26611200

約数和(自身を除く): 7971865

約数列:

[1, 5, 11, 13, 55, 65, 131, 143, 199, 655, 715, 995, 1441, 1703, 2189, 2587, 7205, 8515, 10945, 12935, 18733, 26069, 28457, 93665, 130345, 142285, 286759, 338897, 1433795, 1694485, 3727867, 18639335]

約数ペア:

[(1, 18639335), (5, 3727867), (11, 1694485), (13, 1433795), (55, 338897), (65, 286759), (131, 142285), (143, 130345), (199, 93665), (655, 28457), (715, 26069), (995, 18733), (1441, 12935), (1703, 10945), (2189, 8515), (2587, 7205)]