128781850

素因数分解:

$2^1\times 5^2\times {\mathrm{79}}^1\times {\mathrm{32603}}^1$

素因数の和:32694

約数の個数: 24

約数和(自身を含む): 242573760

約数和(自身を除く): 113791910

約数列:

[1, 2, 5, 10, 25, 50, 79, 158, 395, 790, 1975, 3950, 32603, 65206, 163015, 326030, 815075, 1630150, 2575637, 5151274, 12878185, 25756370, 64390925, 128781850]

約数ペア:

[(1, 128781850), (2, 64390925), (5, 25756370), (10, 12878185), (25, 5151274), (50, 2575637), (79, 1630150), (158, 815075), (395, 326030), (790, 163015), (1975, 65206), (3950, 32603)]