15168321

素因数分解:

$3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{3947}}^1$

素因数の和:4021

約数の個数: 24

約数和(自身を含む): 25456704

約数和(自身を除く): 10288383

約数列:

[1, 3, 7, 9, 21, 61, 63, 183, 427, 549, 1281, 3843, 3947, 11841, 27629, 35523, 82887, 240767, 248661, 722301, 1685369, 2166903, 5056107, 15168321]

約数ペア:

[(1, 15168321), (3, 5056107), (7, 2166903), (9, 1685369), (21, 722301), (61, 248661), (63, 240767), (183, 82887), (427, 35523), (549, 27629), (1281, 11841), (3843, 3947)]