21059300

素因数分解:

$2^2\times 5^2\times {\mathrm{197}}^1\times {\mathrm{1069}}^1$

素因数の和:1280

約数の個数: 36

約数和(自身を含む): 45973620

約数和(自身を除く): 24914320

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 197, 394, 788, 985, 1069, 1970, 2138, 3940, 4276, 4925, 5345, 9850, 10690, 19700, 21380, 26725, 53450, 106900, 210593, 421186, 842372, 1052965, 2105930, 4211860, 5264825, 10529650, 21059300]

約数ペア:

[(1, 21059300), (2, 10529650), (4, 5264825), (5, 4211860), (10, 2105930), (20, 1052965), (25, 842372), (50, 421186), (100, 210593), (197, 106900), (394, 53450), (788, 26725), (985, 21380), (1069, 19700), (1970, 10690), (2138, 9850), (3940, 5345), (4276, 4925)]