19409420

素因数分解:

$2^2\times 5^1\times {\mathrm{191}}^1\times {\mathrm{5081}}^1$

素因数の和:5281

約数の個数: 24

約数和(自身を含む): 40981248

約数和(自身を除く): 21571828

約数列:

[1, 2, 4, 5, 10, 20, 191, 382, 764, 955, 1910, 3820, 5081, 10162, 20324, 25405, 50810, 101620, 970471, 1940942, 3881884, 4852355, 9704710, 19409420]

約数ペア:

[(1, 19409420), (2, 9704710), (4, 4852355), (5, 3881884), (10, 1940942), (20, 970471), (191, 101620), (382, 50810), (764, 25405), (955, 20324), (1910, 10162), (3820, 5081)]