21161007

素因数分解:

$3^4\times 7^1\times {\mathrm{37321}}^1$

素因数の和:37340

約数の個数: 20

約数和(自身を含む): 36127696

約数和(自身を除く): 14966689

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 37321, 111963, 261247, 335889, 783741, 1007667, 2351223, 3023001, 7053669, 21161007]

約数ペア:

[(1, 21161007), (3, 7053669), (7, 3023001), (9, 2351223), (21, 1007667), (27, 783741), (63, 335889), (81, 261247), (189, 111963), (567, 37321)]