19735120

素因数分解:

$2^4\times 5^1\times {\mathrm{246689}}^1$

素因数の和:246702

約数の個数: 20

約数和(自身を含む): 45884340

約数和(自身を除く): 26149220

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 246689, 493378, 986756, 1233445, 1973512, 2466890, 3947024, 4933780, 9867560, 19735120]

約数ペア:

[(1, 19735120), (2, 9867560), (4, 4933780), (5, 3947024), (8, 2466890), (10, 1973512), (16, 1233445), (20, 986756), (40, 493378), (80, 246689)]