21082065

素因数分解:

$3^1\times 5^1\times {\mathrm{211}}^1\times {\mathrm{6661}}^1$

素因数の和:6880

約数の個数: 16

約数和(自身を含む): 33896256

約数和(自身を除く): 12814191

約数列:

[1, 3, 5, 15, 211, 633, 1055, 3165, 6661, 19983, 33305, 99915, 1405471, 4216413, 7027355, 21082065]

約数ペア:

[(1, 21082065), (3, 7027355), (5, 4216413), (15, 1405471), (211, 99915), (633, 33305), (1055, 19983), (3165, 6661)]