8191390

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{19979}}^1$

素因数の和:20027

約数の個数: 16

約数和(自身を含む): 15104880

約数和(自身を除く): 6913490

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 19979, 39958, 99895, 199790, 819139, 1638278, 4095695, 8191390]

約数ペア:

[(1, 8191390), (2, 4095695), (5, 1638278), (10, 819139), (41, 199790), (82, 99895), (205, 39958), (410, 19979)]