19865984

素因数分解:

$2^7\times {\mathrm{155203}}^1$

素因数の和:155217

約数の個数: 16

約数和(自身を含む): 39577020

約数和(自身を除く): 19711036

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 155203, 310406, 620812, 1241624, 2483248, 4966496, 9932992, 19865984]

約数ペア:

[(1, 19865984), (2, 9932992), (4, 4966496), (8, 2483248), (16, 1241624), (32, 620812), (64, 310406), (128, 155203)]