21987235

素因数分解:

$5^1\times {\mathrm{59}}^1\times {\mathrm{73}}^1\times {\mathrm{1021}}^1$

素因数の和:1158

約数の個数: 16

約数和(自身を含む): 27226080

約数和(自身を除く): 5238845

約数列:

[1, 5, 59, 73, 295, 365, 1021, 4307, 5105, 21535, 60239, 74533, 301195, 372665, 4397447, 21987235]

約数ペア:

[(1, 21987235), (5, 4397447), (59, 372665), (73, 301195), (295, 74533), (365, 60239), (1021, 21535), (4307, 5105)]