21000427889

素因数分解:

$7^2\times {\mathrm{5527}}^1\times {\mathrm{77543}}^1$

素因数の和:83084

約数の個数: 12

約数和(自身を含む): 24433804224

約数和(自身を除く): 3433376335

約数列:

[1, 7, 49, 5527, 38689, 77543, 270823, 542801, 3799607, 428580161, 3000061127, 21000427889]

約数ペア:

[(1, 21000427889), (7, 3000061127), (49, 428580161), (5527, 3799607), (38689, 542801), (77543, 270823)]