300020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{2143}}^1$

素因数の和:2159

約数の個数: 24

約数和(自身を含む): 720384

約数和(自身を除く): 420364

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 2143, 4286, 8572, 10715, 15001, 21430, 30002, 42860, 60004, 75005, 150010, 300020]

約数ペア:

[(1, 300020), (2, 150010), (4, 75005), (5, 60004), (7, 42860), (10, 30002), (14, 21430), (20, 15001), (28, 10715), (35, 8572), (70, 4286), (140, 2143)]