21546640

素因数分解:

$2^4\times 5^1\times {\mathrm{269333}}^1$

素因数の和:269346

約数の個数: 20

約数和(自身を含む): 50096124

約数和(自身を除く): 28549484

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 269333, 538666, 1077332, 1346665, 2154664, 2693330, 4309328, 5386660, 10773320, 21546640]

約数ペア:

[(1, 21546640), (2, 10773320), (4, 5386660), (5, 4309328), (8, 2693330), (10, 2154664), (16, 1346665), (20, 1077332), (40, 538666), (80, 269333)]