397188040

素因数分解:

$2^3\times 5^1\times {\mathrm{9929701}}^1$

素因数の和:9929712

約数の個数: 16

約数和(自身を含む): 893673180

約数和(自身を除く): 496485140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 9929701, 19859402, 39718804, 49648505, 79437608, 99297010, 198594020, 397188040]

約数ペア:

[(1, 397188040), (2, 198594020), (4, 99297010), (5, 79437608), (8, 49648505), (10, 39718804), (20, 19859402), (40, 9929701)]