20346755

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^2\times {\mathrm{199}}^1$

素因数の和:252

約数の個数: 36

約数和(自身を含む): 29206800

約数和(自身を除く): 8860045

約数列:

[1, 5, 11, 13, 55, 65, 121, 143, 169, 199, 605, 715, 845, 995, 1573, 1859, 2189, 2587, 7865, 9295, 10945, 12935, 20449, 24079, 28457, 33631, 102245, 120395, 142285, 168155, 313027, 369941, 1565135, 1849705, 4069351, 20346755]

約数ペア:

[(1, 20346755), (5, 4069351), (11, 1849705), (13, 1565135), (55, 369941), (65, 313027), (121, 168155), (143, 142285), (169, 120395), (199, 102245), (605, 33631), (715, 28457), (845, 24079), (995, 20449), (1573, 12935), (1859, 10945), (2189, 9295), (2587, 7865)]