28678640

素因数分解:

$2^4\times 5^1\times {\mathrm{358483}}^1$

素因数の和:358496

約数の個数: 20

約数和(自身を含む): 66678024

約数和(自身を除く): 37999384

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 358483, 716966, 1433932, 1792415, 2867864, 3584830, 5735728, 7169660, 14339320, 28678640]

約数ペア:

[(1, 28678640), (2, 14339320), (4, 7169660), (5, 5735728), (8, 3584830), (10, 2867864), (16, 1792415), (20, 1433932), (40, 716966), (80, 358483)]