21391616

素因数分解:

$2^8\times {\mathrm{83561}}^1$

素因数の和:83577

約数の個数: 18

約数和(自身を含む): 42700182

約数和(自身を除く): 21308566

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 83561, 167122, 334244, 668488, 1336976, 2673952, 5347904, 10695808, 21391616]

約数ペア:

[(1, 21391616), (2, 10695808), (4, 5347904), (8, 2673952), (16, 1336976), (32, 668488), (64, 334244), (128, 167122), (256, 83561)]