154609540

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{39241}}^1$

素因数の和:39447

約数の個数: 24

約数和(自身を含む): 326336472

約数和(自身を除く): 171726932

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 39241, 78482, 156964, 196205, 392410, 784820, 7730477, 15460954, 30921908, 38652385, 77304770, 154609540]

約数ペア:

[(1, 154609540), (2, 77304770), (4, 38652385), (5, 30921908), (10, 15460954), (20, 7730477), (197, 784820), (394, 392410), (788, 196205), (985, 156964), (1970, 78482), (3940, 39241)]