21081664

素因数分解:

$2^6\times {\mathrm{329401}}^1$

素因数の和:329413

約数の個数: 14

約数和(自身を含む): 41834054

約数和(自身を除く): 20752390

約数列:

[1, 2, 4, 8, 16, 32, 64, 329401, 658802, 1317604, 2635208, 5270416, 10540832, 21081664]

約数ペア:

[(1, 21081664), (2, 10540832), (4, 5270416), (8, 2635208), (16, 1317604), (32, 658802), (64, 329401)]