21197189

素因数分解:

${\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{127}}^1\times {\mathrm{347}}^1$

素因数の和:524

約数の個数: 16

約数和(自身を含む): 23697408

約数和(自身を除く): 2500219

約数列:

[1, 13, 37, 127, 347, 481, 1651, 4511, 4699, 12839, 44069, 61087, 166907, 572897, 1630553, 21197189]

約数ペア:

[(1, 21197189), (13, 1630553), (37, 572897), (127, 166907), (347, 61087), (481, 44069), (1651, 12839), (4511, 4699)]