21256190

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{49433}}^1$

素因数の和:49483

約数の個数: 16

約数和(自身を含む): 39151728

約数和(自身を除く): 17895538

約数列:

[1, 2, 5, 10, 43, 86, 215, 430, 49433, 98866, 247165, 494330, 2125619, 4251238, 10628095, 21256190]

約数ペア:

[(1, 21256190), (2, 10628095), (5, 4251238), (10, 2125619), (43, 494330), (86, 247165), (215, 98866), (430, 49433)]