28367090

素因数分解:

$2^1\times 5^1\times {\mathrm{709}}^1\times {\mathrm{4001}}^1$

素因数の和:4717

約数の個数: 16

約数和(自身を含む): 51145560

約数和(自身を除く): 22778470

約数列:

[1, 2, 5, 10, 709, 1418, 3545, 4001, 7090, 8002, 20005, 40010, 2836709, 5673418, 14183545, 28367090]

約数ペア:

[(1, 28367090), (2, 14183545), (5, 5673418), (10, 2836709), (709, 40010), (1418, 20005), (3545, 8002), (4001, 7090)]