21791253

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{173}}^1\times {\mathrm{347}}^1$

素因数の和:545

約数の個数: 24

約数和(自身を含む): 32213664

約数和(自身を除く): 10422411

約数列:

[1, 3, 11, 33, 121, 173, 347, 363, 519, 1041, 1903, 3817, 5709, 11451, 20933, 41987, 60031, 62799, 125961, 180093, 660341, 1981023, 7263751, 21791253]

約数ペア:

[(1, 21791253), (3, 7263751), (11, 1981023), (33, 660341), (121, 180093), (173, 125961), (347, 62799), (363, 60031), (519, 41987), (1041, 20933), (1903, 11451), (3817, 5709)]