218191540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1558511}}^1$

素因数の和:1558527

約数の個数: 24

約数和(自身を含む): 523660032

約数和(自身を除く): 305468492

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1558511, 3117022, 6234044, 7792555, 10909577, 15585110, 21819154, 31170220, 43638308, 54547885, 109095770, 218191540]

約数ペア:

[(1, 218191540), (2, 109095770), (4, 54547885), (5, 43638308), (7, 31170220), (10, 21819154), (14, 15585110), (20, 10909577), (28, 7792555), (35, 6234044), (70, 3117022), (140, 1558511)]