28111900

素因数分解:

$2^2\times 5^2\times {\mathrm{197}}^1\times {\mathrm{1427}}^1$

素因数の和:1638

約数の個数: 36

約数和(自身を含む): 61355448

約数和(自身を除く): 33243548

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 197, 394, 788, 985, 1427, 1970, 2854, 3940, 4925, 5708, 7135, 9850, 14270, 19700, 28540, 35675, 71350, 142700, 281119, 562238, 1124476, 1405595, 2811190, 5622380, 7027975, 14055950, 28111900]

約数ペア:

[(1, 28111900), (2, 14055950), (4, 7027975), (5, 5622380), (10, 2811190), (20, 1405595), (25, 1124476), (50, 562238), (100, 281119), (197, 142700), (394, 71350), (788, 35675), (985, 28540), (1427, 19700), (1970, 14270), (2854, 9850), (3940, 7135), (4925, 5708)]