680636

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{499}}^1$

素因数の和:545

約数の個数: 24

約数和(自身を含む): 1344000

約数和(自身を除く): 663364

約数列:

[1, 2, 4, 11, 22, 31, 44, 62, 124, 341, 499, 682, 998, 1364, 1996, 5489, 10978, 15469, 21956, 30938, 61876, 170159, 340318, 680636]

約数ペア:

[(1, 680636), (2, 340318), (4, 170159), (11, 61876), (22, 30938), (31, 21956), (44, 15469), (62, 10978), (124, 5489), (341, 1996), (499, 1364), (682, 998)]