12685390

素因数分解:

$2^1\times 5^1\times {\mathrm{641}}^1\times {\mathrm{1979}}^1$

素因数の和:2627

約数の個数: 16

約数和(自身を含む): 22880880

約数和(自身を除く): 10195490

約数列:

[1, 2, 5, 10, 641, 1282, 1979, 3205, 3958, 6410, 9895, 19790, 1268539, 2537078, 6342695, 12685390]

約数ペア:

[(1, 12685390), (2, 6342695), (5, 2537078), (10, 1268539), (641, 19790), (1282, 9895), (1979, 6410), (3205, 3958)]