278364957

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{137}}^1\times {\mathrm{983}}^1$

素因数の和:1189

約数の個数: 32

約数和(自身を含む): 410635008

約数和(自身を除く): 132270051

約数列:

[1, 3, 13, 39, 53, 137, 159, 411, 689, 983, 1781, 2067, 2949, 5343, 7261, 12779, 21783, 38337, 52099, 94393, 134671, 156297, 283179, 404013, 677287, 1750723, 2031861, 5252169, 7137563, 21412689, 92788319, 278364957]

約数ペア:

[(1, 278364957), (3, 92788319), (13, 21412689), (39, 7137563), (53, 5252169), (137, 2031861), (159, 1750723), (411, 677287), (689, 404013), (983, 283179), (1781, 156297), (2067, 134671), (2949, 94393), (5343, 52099), (7261, 38337), (12779, 21783)]