172279420

素因数分解:

$2^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{47591}}^1$

素因数の和:47781

約数の個数: 24

約数和(自身を含む): 363793248

約数和(自身を除く): 191513828

約数列:

[1, 2, 4, 5, 10, 20, 181, 362, 724, 905, 1810, 3620, 47591, 95182, 190364, 237955, 475910, 951820, 8613971, 17227942, 34455884, 43069855, 86139710, 172279420]

約数ペア:

[(1, 172279420), (2, 86139710), (4, 43069855), (5, 34455884), (10, 17227942), (20, 8613971), (181, 951820), (362, 475910), (724, 237955), (905, 190364), (1810, 95182), (3620, 47591)]