21698571

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{239}}^1\times {\mathrm{571}}^1$

素因数の和:866

約数の個数: 16

約数和(自身を含む): 29652480

約数和(自身を除く): 7953909

約数列:

[1, 3, 53, 159, 239, 571, 717, 1713, 12667, 30263, 38001, 90789, 136469, 409407, 7232857, 21698571]

約数ペア:

[(1, 21698571), (3, 7232857), (53, 409407), (159, 136469), (239, 90789), (571, 38001), (717, 30263), (1713, 12667)]