12440720

素因数分解:

$2^4\times 5^1\times {\mathrm{155509}}^1$

素因数の和:155522

約数の個数: 20

約数和(自身を含む): 28924860

約数和(自身を除く): 16484140

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 155509, 311018, 622036, 777545, 1244072, 1555090, 2488144, 3110180, 6220360, 12440720]

約数ペア:

[(1, 12440720), (2, 6220360), (4, 3110180), (5, 2488144), (8, 1555090), (10, 1244072), (16, 777545), (20, 622036), (40, 311018), (80, 155509)]