21239300

素因数分解:

$2^2\times 5^2\times {\mathrm{47}}^1\times {\mathrm{4519}}^1$

素因数の和:4580

約数の個数: 36

約数和(自身を含む): 47080320

約数和(自身を除く): 25841020

約数列:

[1, 2, 4, 5, 10, 20, 25, 47, 50, 94, 100, 188, 235, 470, 940, 1175, 2350, 4519, 4700, 9038, 18076, 22595, 45190, 90380, 112975, 212393, 225950, 424786, 451900, 849572, 1061965, 2123930, 4247860, 5309825, 10619650, 21239300]

約数ペア:

[(1, 21239300), (2, 10619650), (4, 5309825), (5, 4247860), (10, 2123930), (20, 1061965), (25, 849572), (47, 451900), (50, 424786), (94, 225950), (100, 212393), (188, 112975), (235, 90380), (470, 45190), (940, 22595), (1175, 18076), (2350, 9038), (4519, 4700)]