28180701

素因数分解:

$3^2\times {\mathrm{59}}^1\times {\mathrm{73}}^1\times {\mathrm{727}}^1$

素因数の和:865

約数の個数: 24

約数和(自身を含む): 42020160

約数和(自身を除く): 13839459

約数列:

[1, 3, 9, 59, 73, 177, 219, 531, 657, 727, 2181, 4307, 6543, 12921, 38763, 42893, 53071, 128679, 159213, 386037, 477639, 3131189, 9393567, 28180701]

約数ペア:

[(1, 28180701), (3, 9393567), (9, 3131189), (59, 477639), (73, 386037), (177, 159213), (219, 128679), (531, 53071), (657, 42893), (727, 38763), (2181, 12921), (4307, 6543)]