20708325

素因数分解:

$3^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{2789}}^1$

素因数の和:2819

約数の個数: 48

約数和(自身を含む): 41515200

約数和(自身を除く): 20806875

約数列:

[1, 3, 5, 9, 11, 15, 25, 27, 33, 45, 55, 75, 99, 135, 165, 225, 275, 297, 495, 675, 825, 1485, 2475, 2789, 7425, 8367, 13945, 25101, 30679, 41835, 69725, 75303, 92037, 125505, 153395, 209175, 276111, 376515, 460185, 627525, 766975, 828333, 1380555, 1882575, 2300925, 4141665, 6902775, 20708325]

約数ペア:

[(1, 20708325), (3, 6902775), (5, 4141665), (9, 2300925), (11, 1882575), (15, 1380555), (25, 828333), (27, 766975), (33, 627525), (45, 460185), (55, 376515), (75, 276111), (99, 209175), (135, 153395), (165, 125505), (225, 92037), (275, 75303), (297, 69725), (495, 41835), (675, 30679), (825, 25101), (1485, 13945), (2475, 8367), (2789, 7425)]