18165790

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{20411}}^1$

素因数の和:20507

約数の個数: 16

約数和(自身を含む): 33067440

約数和(自身を除く): 14901650

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 20411, 40822, 102055, 204110, 1816579, 3633158, 9082895, 18165790]

約数ペア:

[(1, 18165790), (2, 9082895), (5, 3633158), (10, 1816579), (89, 204110), (178, 102055), (445, 40822), (890, 20411)]