15871280

素因数分解:

$2^4\times 5^1\times {\mathrm{198391}}^1$

素因数の和:198404

約数の個数: 20

約数和(自身を含む): 36900912

約数和(自身を除く): 21029632

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 198391, 396782, 793564, 991955, 1587128, 1983910, 3174256, 3967820, 7935640, 15871280]

約数ペア:

[(1, 15871280), (2, 7935640), (4, 3967820), (5, 3174256), (8, 1983910), (10, 1587128), (16, 991955), (20, 793564), (40, 396782), (80, 198391)]