21196647

素因数分解:

$3^5\times {\mathrm{19}}^1\times {\mathrm{4591}}^1$

素因数の和:4625

約数の個数: 24

約数和(自身を含む): 33429760

約数和(自身を除く): 12233113

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 243, 513, 1539, 4591, 4617, 13773, 41319, 87229, 123957, 261687, 371871, 785061, 1115613, 2355183, 7065549, 21196647]

約数ペア:

[(1, 21196647), (3, 7065549), (9, 2355183), (19, 1115613), (27, 785061), (57, 371871), (81, 261687), (171, 123957), (243, 87229), (513, 41319), (1539, 13773), (4591, 4617)]