21269090

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{49463}}^1$

素因数の和:49513

約数の個数: 16

約数和(自身を含む): 39175488

約数和(自身を除く): 17906398

約数列:

[1, 2, 5, 10, 43, 86, 215, 430, 49463, 98926, 247315, 494630, 2126909, 4253818, 10634545, 21269090]

約数ペア:

[(1, 21269090), (2, 10634545), (5, 4253818), (10, 2126909), (43, 494630), (86, 247315), (215, 98926), (430, 49463)]