25689980

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{9241}}^1$

素因数の和:9389

約数の個数: 24

約数和(自身を含む): 54342960

約数和(自身を除く): 28652980

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 9241, 18482, 36964, 46205, 92410, 184820, 1284499, 2568998, 5137996, 6422495, 12844990, 25689980]

約数ペア:

[(1, 25689980), (2, 12844990), (4, 6422495), (5, 5137996), (10, 2568998), (20, 1284499), (139, 184820), (278, 92410), (556, 46205), (695, 36964), (1390, 18482), (2780, 9241)]