12681640

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{2963}}^1$

素因数の和:3081

約数の個数: 32

約数和(自身を含む): 28810080

約数和(自身を除く): 16128440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 214, 428, 535, 856, 1070, 2140, 2963, 4280, 5926, 11852, 14815, 23704, 29630, 59260, 118520, 317041, 634082, 1268164, 1585205, 2536328, 3170410, 6340820, 12681640]

約数ペア:

[(1, 12681640), (2, 6340820), (4, 3170410), (5, 2536328), (8, 1585205), (10, 1268164), (20, 634082), (40, 317041), (107, 118520), (214, 59260), (428, 29630), (535, 23704), (856, 14815), (1070, 11852), (2140, 5926), (2963, 4280)]