2019499780

素因数分解:

$2^2\times 5^1\times {\mathrm{100974989}}^1$

素因数の和:100974998

約数の個数: 12

約数和(自身を含む): 4240949580

約数和(自身を除く): 2221449800

約数列:

[1, 2, 4, 5, 10, 20, 100974989, 201949978, 403899956, 504874945, 1009749890, 2019499780]

約数ペア:

[(1, 2019499780), (2, 1009749890), (4, 504874945), (5, 403899956), (10, 201949978), (20, 100974989)]