20861007

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{2647}}^1$

素因数の和:2758

約数の個数: 16

約数和(自身を含む): 28979712

約数和(自身を除く): 8118705

約数列:

[1, 3, 37, 71, 111, 213, 2627, 2647, 7881, 7941, 97939, 187937, 293817, 563811, 6953669, 20861007]

約数ペア:

[(1, 20861007), (3, 6953669), (37, 563811), (71, 293817), (111, 187937), (213, 97939), (2627, 7941), (2647, 7881)]