28951221

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{3359}}^1$

素因数の和:3405

約数の個数: 24

約数和(自身を含む): 44271360

約数和(自身を除く): 15320139

約数列:

[1, 3, 13, 17, 39, 51, 169, 221, 507, 663, 2873, 3359, 8619, 10077, 43667, 57103, 131001, 171309, 567671, 742339, 1703013, 2227017, 9650407, 28951221]

約数ペア:

[(1, 28951221), (3, 9650407), (13, 2227017), (17, 1703013), (39, 742339), (51, 567671), (169, 171309), (221, 131001), (507, 57103), (663, 43667), (2873, 10077), (3359, 8619)]