21684209216

素因数分解:

$2^6\times {\mathrm{197}}^1\times {\mathrm{1719877}}^1$

素因数の和:1720086

約数の個数: 28

約数和(自身を含む): 43248052188

約数和(自身を除く): 21563842972

約数列:

[1, 2, 4, 8, 16, 32, 64, 197, 394, 788, 1576, 3152, 6304, 12608, 1719877, 3439754, 6879508, 13759016, 27518032, 55036064, 110072128, 338815769, 677631538, 1355263076, 2710526152, 5421052304, 10842104608, 21684209216]

約数ペア:

[(1, 21684209216), (2, 10842104608), (4, 5421052304), (8, 2710526152), (16, 1355263076), (32, 677631538), (64, 338815769), (197, 110072128), (394, 55036064), (788, 27518032), (1576, 13759016), (3152, 6879508), (6304, 3439754), (12608, 1719877)]