12440360

素因数分解:

$2^3\times 5^1\times {\mathrm{311009}}^1$

素因数の和:311020

約数の個数: 16

約数和(自身を含む): 27990900

約数和(自身を除く): 15550540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 311009, 622018, 1244036, 1555045, 2488072, 3110090, 6220180, 12440360]

約数ペア:

[(1, 12440360), (2, 6220180), (4, 3110090), (5, 2488072), (8, 1555045), (10, 1244036), (20, 622018), (40, 311009)]