21138663

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{77431}}^1$

素因数の和:77454

約数の個数: 16

約数和(自身を含む): 34689536

約数和(自身を除く): 13550873

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 77431, 232293, 542017, 1006603, 1626051, 3019809, 7046221, 21138663]

約数ペア:

[(1, 21138663), (3, 7046221), (7, 3019809), (13, 1626051), (21, 1006603), (39, 542017), (91, 232293), (273, 77431)]