405121405

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{1997}}^1\times {\mathrm{3121}}^1$

素因数の和:5136

約数の個数: 16

約数和(自身を含む): 523971504

約数和(自身を除く): 118850099

約数列:

[1, 5, 13, 65, 1997, 3121, 9985, 15605, 25961, 40573, 129805, 202865, 6232637, 31163185, 81024281, 405121405]

約数ペア:

[(1, 405121405), (5, 81024281), (13, 31163185), (65, 6232637), (1997, 202865), (3121, 129805), (9985, 40573), (15605, 25961)]