261161615

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{28097}}^1$

素因数の和:28139

約数の個数: 24

約数和(自身を含む): 370219248

約数和(自身を除く): 109057633

約数列:

[1, 5, 11, 13, 55, 65, 143, 169, 715, 845, 1859, 9295, 28097, 140485, 309067, 365261, 1545335, 1826305, 4017871, 4748393, 20089355, 23741965, 52232323, 261161615]

約数ペア:

[(1, 261161615), (5, 52232323), (11, 23741965), (13, 20089355), (55, 4748393), (65, 4017871), (143, 1826305), (169, 1545335), (715, 365261), (845, 309067), (1859, 140485), (9295, 28097)]