156728890

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{198391}}^1$

素因数の和:198477

約数の個数: 16

約数和(自身を含む): 285684480

約数和(自身を除く): 128955590

約数列:

[1, 2, 5, 10, 79, 158, 395, 790, 198391, 396782, 991955, 1983910, 15672889, 31345778, 78364445, 156728890]

約数ペア:

[(1, 156728890), (2, 78364445), (5, 31345778), (10, 15672889), (79, 1983910), (158, 991955), (395, 396782), (790, 198391)]