156728004220

素因数分解:

$2^2\times 5^1\times {\mathrm{7836400211}}^1$

素因数の和:7836400220

約数の個数: 12

約数和(自身を含む): 329128808904

約数和(自身を除く): 172400804684

約数列:

[1, 2, 4, 5, 10, 20, 7836400211, 15672800422, 31345600844, 39182001055, 78364002110, 156728004220]

約数ペア:

[(1, 156728004220), (2, 78364002110), (4, 39182001055), (5, 31345600844), (10, 15672800422), (20, 7836400211)]