8440720

素因数分解:

$2^4\times 5^1\times {\mathrm{105509}}^1$

素因数の和:105522

約数の個数: 20

約数和(自身を含む): 19624860

約数和(自身を除く): 11184140

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 105509, 211018, 422036, 527545, 844072, 1055090, 1688144, 2110180, 4220360, 8440720]

約数ペア:

[(1, 8440720), (2, 4220360), (4, 2110180), (5, 1688144), (8, 1055090), (10, 844072), (16, 527545), (20, 422036), (40, 211018), (80, 105509)]