28213689

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{2281}}^1$

素因数の和:2341

約数の個数: 32

約数和(自身を含む): 46735360

約数和(自身を除く): 18521671

約数列:

[1, 3, 7, 19, 21, 31, 57, 93, 133, 217, 399, 589, 651, 1767, 2281, 4123, 6843, 12369, 15967, 43339, 47901, 70711, 130017, 212133, 303373, 494977, 910119, 1343509, 1484931, 4030527, 9404563, 28213689]

約数ペア:

[(1, 28213689), (3, 9404563), (7, 4030527), (19, 1484931), (21, 1343509), (31, 910119), (57, 494977), (93, 303373), (133, 212133), (217, 130017), (399, 70711), (589, 47901), (651, 43339), (1767, 15967), (2281, 12369), (4123, 6843)]