21892521

素因数分解:

$3^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{9743}}^1$

素因数の和:9860

約数の個数: 16

約数和(自身を含む): 33675264

約数和(自身を除く): 11782743

約数列:

[1, 3, 7, 21, 107, 321, 749, 2247, 9743, 29229, 68201, 204603, 1042501, 3127503, 7297507, 21892521]

約数ペア:

[(1, 21892521), (3, 7297507), (7, 3127503), (21, 1042501), (107, 204603), (321, 68201), (749, 29229), (2247, 9743)]