21319383

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{991}}^1$

素因数の和:1166

約数の個数: 16

約数和(自身を含む): 29140992

約数和(自身を除く): 7821609

約数列:

[1, 3, 71, 101, 213, 303, 991, 2973, 7171, 21513, 70361, 100091, 211083, 300273, 7106461, 21319383]

約数ペア:

[(1, 21319383), (3, 7106461), (71, 300273), (101, 211083), (213, 100091), (303, 70361), (991, 21513), (2973, 7171)]