825680

素因数分解:

$2^4\times 5^1\times {\mathrm{10321}}^1$

素因数の和:10334

約数の個数: 20

約数和(自身を含む): 1919892

約数和(自身を除く): 1094212

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 10321, 20642, 41284, 51605, 82568, 103210, 165136, 206420, 412840, 825680]

約数ペア:

[(1, 825680), (2, 412840), (4, 206420), (5, 165136), (8, 103210), (10, 82568), (16, 51605), (20, 41284), (40, 20642), (80, 10321)]