21709355

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{311}}^1\times {\mathrm{607}}^1$

素因数の和:946

約数の個数: 16

約数和(自身を含む): 27316224

約数和(自身を除く): 5606869

約数列:

[1, 5, 23, 115, 311, 607, 1555, 3035, 7153, 13961, 35765, 69805, 188777, 943885, 4341871, 21709355]

約数ペア:

[(1, 21709355), (5, 4341871), (23, 943885), (115, 188777), (311, 69805), (607, 35765), (1555, 13961), (3035, 7153)]