21114567

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{521}}^1$

素因数の和:628

約数の個数: 32

約数和(自身を含む): 33408000

約数和(自身を除く): 12293433

約数列:

[1, 3, 9, 19, 27, 57, 79, 171, 237, 513, 521, 711, 1501, 1563, 2133, 4503, 4689, 9899, 13509, 14067, 29697, 40527, 41159, 89091, 123477, 267273, 370431, 782021, 1111293, 2346063, 7038189, 21114567]

約数ペア:

[(1, 21114567), (3, 7038189), (9, 2346063), (19, 1111293), (27, 782021), (57, 370431), (79, 267273), (171, 123477), (237, 89091), (513, 41159), (521, 40527), (711, 29697), (1501, 14067), (1563, 13509), (2133, 9899), (4503, 4689)]