216891880

素因数分解:

$2^3\times 5^1\times {\mathrm{5422297}}^1$

素因数の和:5422308

約数の個数: 16

約数和(自身を含む): 488006820

約数和(自身を除く): 271114940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5422297, 10844594, 21689188, 27111485, 43378376, 54222970, 108445940, 216891880]

約数ペア:

[(1, 216891880), (2, 108445940), (4, 54222970), (5, 43378376), (8, 27111485), (10, 21689188), (20, 10844594), (40, 5422297)]