21371800

素因数分解:

$2^3\times 5^2\times {\mathrm{106859}}^1$

素因数の和:106875

約数の個数: 24

約数和(自身を含む): 49689900

約数和(自身を除く): 28318100

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 106859, 213718, 427436, 534295, 854872, 1068590, 2137180, 2671475, 4274360, 5342950, 10685900, 21371800]

約数ペア:

[(1, 21371800), (2, 10685900), (4, 5342950), (5, 4274360), (8, 2671475), (10, 2137180), (20, 1068590), (25, 854872), (40, 534295), (50, 427436), (100, 213718), (200, 106859)]