4395640

素因数分解:

$2^3\times 5^1\times {\mathrm{109891}}^1$

素因数の和:109902

約数の個数: 16

約数和(自身を含む): 9890280

約数和(自身を除く): 5494640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109891, 219782, 439564, 549455, 879128, 1098910, 2197820, 4395640]

約数ペア:

[(1, 4395640), (2, 2197820), (4, 1098910), (5, 879128), (8, 549455), (10, 439564), (20, 219782), (40, 109891)]