19870331

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{1913}}^1$

素因数の和:1990

約数の個数: 16

約数和(自身を含む): 23151744

約数和(自身を除く): 3281413

約数列:

[1, 13, 17, 47, 221, 611, 799, 1913, 10387, 24869, 32521, 89911, 422773, 1168843, 1528487, 19870331]

約数ペア:

[(1, 19870331), (13, 1528487), (17, 1168843), (47, 422773), (221, 89911), (611, 32521), (799, 24869), (1913, 10387)]