80400070

素因数分解:

$2^1\times 5^1\times {\mathrm{443}}^1\times {\mathrm{18149}}^1$

素因数の和:18599

約数の個数: 16

約数和(自身を含む): 145054800

約数和(自身を除く): 64654730

約数列:

[1, 2, 5, 10, 443, 886, 2215, 4430, 18149, 36298, 90745, 181490, 8040007, 16080014, 40200035, 80400070]

約数ペア:

[(1, 80400070), (2, 40200035), (5, 16080014), (10, 8040007), (443, 181490), (886, 90745), (2215, 36298), (4430, 18149)]