21420950

素因数分解:

$2^1\times 5^2\times {\mathrm{257}}^1\times {\mathrm{1667}}^1$

素因数の和:1936

約数の個数: 24

約数和(自身を含む): 40021992

約数和(自身を除く): 18601042

約数列:

[1, 2, 5, 10, 25, 50, 257, 514, 1285, 1667, 2570, 3334, 6425, 8335, 12850, 16670, 41675, 83350, 428419, 856838, 2142095, 4284190, 10710475, 21420950]

約数ペア:

[(1, 21420950), (2, 10710475), (5, 4284190), (10, 2142095), (25, 856838), (50, 428419), (257, 83350), (514, 41675), (1285, 16670), (1667, 12850), (2570, 8335), (3334, 6425)]