1635440

素因数分解:

$2^4\times 5^1\times {\mathrm{20443}}^1$

素因数の和:20456

約数の個数: 20

約数和(自身を含む): 3802584

約数和(自身を除く): 2167144

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 20443, 40886, 81772, 102215, 163544, 204430, 327088, 408860, 817720, 1635440]

約数ペア:

[(1, 1635440), (2, 817720), (4, 408860), (5, 327088), (8, 204430), (10, 163544), (16, 102215), (20, 81772), (40, 40886), (80, 20443)]