20413180

素因数分解:

$2^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{5639}}^1$

素因数の和:5829

約数の個数: 24

約数和(自身を含む): 43112160

約数和(自身を除く): 22698980

約数列:

[1, 2, 4, 5, 10, 20, 181, 362, 724, 905, 1810, 3620, 5639, 11278, 22556, 28195, 56390, 112780, 1020659, 2041318, 4082636, 5103295, 10206590, 20413180]

約数ペア:

[(1, 20413180), (2, 10206590), (4, 5103295), (5, 4082636), (10, 2041318), (20, 1020659), (181, 112780), (362, 56390), (724, 28195), (905, 22556), (1810, 11278), (3620, 5639)]