400880

素因数分解:

$2^4\times 5^1\times {\mathrm{5011}}^1$

素因数の和:5024

約数の個数: 20

約数和(自身を含む): 932232

約数和(自身を除く): 531352

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 5011, 10022, 20044, 25055, 40088, 50110, 80176, 100220, 200440, 400880]

約数ペア:

[(1, 400880), (2, 200440), (4, 100220), (5, 80176), (8, 50110), (10, 40088), (16, 25055), (20, 20044), (40, 10022), (80, 5011)]