19516780

素因数分解:

$2^2\times 5^1\times {\mathrm{571}}^1\times {\mathrm{1709}}^1$

素因数の和:2289

約数の個数: 24

約数和(自身を含む): 41081040

約数和(自身を除く): 21564260

約数列:

[1, 2, 4, 5, 10, 20, 571, 1142, 1709, 2284, 2855, 3418, 5710, 6836, 8545, 11420, 17090, 34180, 975839, 1951678, 3903356, 4879195, 9758390, 19516780]

約数ペア:

[(1, 19516780), (2, 9758390), (4, 4879195), (5, 3903356), (10, 1951678), (20, 975839), (571, 34180), (1142, 17090), (1709, 11420), (2284, 8545), (2855, 6836), (3418, 5710)]