19997271

素因数分解:

$3^2\times 7^1\times {\mathrm{53}}^2\times {\mathrm{113}}^1$

素因数の和:232

約数の個数: 36

約数和(自身を含む): 33943728

約数和(自身を除く): 13946457

約数列:

[1, 3, 7, 9, 21, 53, 63, 113, 159, 339, 371, 477, 791, 1017, 1113, 2373, 2809, 3339, 5989, 7119, 8427, 17967, 19663, 25281, 41923, 53901, 58989, 125769, 176967, 317417, 377307, 952251, 2221919, 2856753, 6665757, 19997271]

約数ペア:

[(1, 19997271), (3, 6665757), (7, 2856753), (9, 2221919), (21, 952251), (53, 377307), (63, 317417), (113, 176967), (159, 125769), (339, 58989), (371, 53901), (477, 41923), (791, 25281), (1017, 19663), (1113, 17967), (2373, 8427), (2809, 7119), (3339, 5989)]