20435440

素因数分解:

$2^4\times 5^1\times {\mathrm{255443}}^1$

素因数の和:255456

約数の個数: 20

約数和(自身を含む): 47512584

約数和(自身を除く): 27077144

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 255443, 510886, 1021772, 1277215, 2043544, 2554430, 4087088, 5108860, 10217720, 20435440]

約数ペア:

[(1, 20435440), (2, 10217720), (4, 5108860), (5, 4087088), (8, 2554430), (10, 2043544), (16, 1277215), (20, 1021772), (40, 510886), (80, 255443)]