208049080

素因数分解:

$2^3\times 5^1\times {\mathrm{643}}^1\times {\mathrm{8089}}^1$

素因数の和:8743

約数の個数: 32

約数和(自身を含む): 468896400

約数和(自身を除く): 260847320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 643, 1286, 2572, 3215, 5144, 6430, 8089, 12860, 16178, 25720, 32356, 40445, 64712, 80890, 161780, 323560, 5201227, 10402454, 20804908, 26006135, 41609816, 52012270, 104024540, 208049080]

約数ペア:

[(1, 208049080), (2, 104024540), (4, 52012270), (5, 41609816), (8, 26006135), (10, 20804908), (20, 10402454), (40, 5201227), (643, 323560), (1286, 161780), (2572, 80890), (3215, 64712), (5144, 40445), (6430, 32356), (8089, 25720), (12860, 16178)]