18816940

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{32443}}^1$

素因数の和:32481

約数の個数: 24

約数和(自身を含む): 40879440

約数和(自身を除く): 22062500

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 32443, 64886, 129772, 162215, 324430, 648860, 940847, 1881694, 3763388, 4704235, 9408470, 18816940]

約数ペア:

[(1, 18816940), (2, 9408470), (4, 4704235), (5, 3763388), (10, 1881694), (20, 940847), (29, 648860), (58, 324430), (116, 162215), (145, 129772), (290, 64886), (580, 32443)]