21249664

素因数分解:

$2^7\times {\mathrm{166013}}^1$

素因数の和:166027

約数の個数: 16

約数和(自身を含む): 42333570

約数和(自身を除く): 21083906

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 166013, 332026, 664052, 1328104, 2656208, 5312416, 10624832, 21249664]

約数ペア:

[(1, 21249664), (2, 10624832), (4, 5312416), (8, 2656208), (16, 1328104), (32, 664052), (64, 332026), (128, 166013)]