21000514857

素因数分解:

$3^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{4184203}}^1$

素因数の和:4184452

約数の個数: 16

約数和(自身を含む): 32134686720

約数和(自身を除く): 11134171863

約数列:

[1, 3, 7, 21, 239, 717, 1673, 5019, 4184203, 12552609, 29289421, 87868263, 1000024517, 3000073551, 7000171619, 21000514857]

約数ペア:

[(1, 21000514857), (3, 7000171619), (7, 3000073551), (21, 1000024517), (239, 87868263), (717, 29289421), (1673, 12552609), (5019, 4184203)]