21195993

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{77641}}^1$

素因数の和:77664

約数の個数: 16

約数和(自身を含む): 34783616

約数和(自身を除く): 13587623

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 77641, 232923, 543487, 1009333, 1630461, 3027999, 7065331, 21195993]

約数ペア:

[(1, 21195993), (3, 7065331), (7, 3027999), (13, 1630461), (21, 1009333), (39, 543487), (91, 232923), (273, 77641)]