21197396

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{241}}^1\times {\mathrm{1999}}^1$

素因数の和:2255

約数の個数: 24

約数和(自身を含む): 40656000

約数和(自身を除く): 19458604

約数列:

[1, 2, 4, 11, 22, 44, 241, 482, 964, 1999, 2651, 3998, 5302, 7996, 10604, 21989, 43978, 87956, 481759, 963518, 1927036, 5299349, 10598698, 21197396]

約数ペア:

[(1, 21197396), (2, 10598698), (4, 5299349), (11, 1927036), (22, 963518), (44, 481759), (241, 87956), (482, 43978), (964, 21989), (1999, 10604), (2651, 7996), (3998, 5302)]