20520487

素因数分解:

${\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1$

素因数の和:187

約数の個数: 24

約数和(自身を含む): 23716800

約数和(自身を除く): 3196313

約数列:

[1, 13, 29, 53, 79, 169, 377, 689, 1027, 1537, 2291, 4187, 4901, 8957, 13351, 19981, 29783, 54431, 121423, 259753, 387179, 707603, 1578499, 20520487]

約数ペア:

[(1, 20520487), (13, 1578499), (29, 707603), (53, 387179), (79, 259753), (169, 121423), (377, 54431), (689, 29783), (1027, 19981), (1537, 13351), (2291, 8957), (4187, 4901)]