2820020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{20143}}^1$

素因数の和:20159

約数の個数: 24

約数和(自身を含む): 6768384

約数和(自身を除く): 3948364

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 20143, 40286, 80572, 100715, 141001, 201430, 282002, 402860, 564004, 705005, 1410010, 2820020]

約数ペア:

[(1, 2820020), (2, 1410010), (4, 705005), (5, 564004), (7, 402860), (10, 282002), (14, 201430), (20, 141001), (28, 100715), (35, 80572), (70, 40286), (140, 20143)]