81219385

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{17599}}^1$

素因数の和:17688

約数の個数: 16

約数和(自身を含む): 106444800

約数和(自身を除く): 25225415

約数列:

[1, 5, 13, 65, 71, 355, 923, 4615, 17599, 87995, 228787, 1143935, 1249529, 6247645, 16243877, 81219385]

約数ペア:

[(1, 81219385), (5, 16243877), (13, 6247645), (65, 1249529), (71, 1143935), (355, 228787), (923, 87995), (4615, 17599)]