20203280

素因数分解:

$2^4\times 5^1\times {\mathrm{252541}}^1$

素因数の和:252554

約数の個数: 20

約数和(自身を含む): 46972812

約数和(自身を除く): 26769532

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 252541, 505082, 1010164, 1262705, 2020328, 2525410, 4040656, 5050820, 10101640, 20203280]

約数ペア:

[(1, 20203280), (2, 10101640), (4, 5050820), (5, 4040656), (8, 2525410), (10, 2020328), (16, 1262705), (20, 1010164), (40, 505082), (80, 252541)]