218365520

素因数分解:

$2^4\times 5^1\times {\mathrm{2729569}}^1$

素因数の和:2729582

約数の個数: 20

約数和(自身を含む): 507700020

約数和(自身を除く): 289334500

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2729569, 5459138, 10918276, 13647845, 21836552, 27295690, 43673104, 54591380, 109182760, 218365520]

約数ペア:

[(1, 218365520), (2, 109182760), (4, 54591380), (5, 43673104), (8, 27295690), (10, 21836552), (16, 13647845), (20, 10918276), (40, 5459138), (80, 2729569)]