71320720

素因数分解:

$2^4\times 5^1\times {\mathrm{891509}}^1$

素因数の和:891522

約数の個数: 20

約数和(自身を含む): 165820860

約数和(自身を除く): 94500140

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 891509, 1783018, 3566036, 4457545, 7132072, 8915090, 14264144, 17830180, 35660360, 71320720]

約数ペア:

[(1, 71320720), (2, 35660360), (4, 17830180), (5, 14264144), (8, 8915090), (10, 7132072), (16, 4457545), (20, 3566036), (40, 1783018), (80, 891509)]