2156020

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1$

素因数の和:184

約数の個数: 48

約数和(自身を含む): 4878720

約数和(自身を除く): 2722700

約数列:

[1, 2, 4, 5, 10, 20, 23, 43, 46, 86, 92, 109, 115, 172, 215, 218, 230, 430, 436, 460, 545, 860, 989, 1090, 1978, 2180, 2507, 3956, 4687, 4945, 5014, 9374, 9890, 10028, 12535, 18748, 19780, 23435, 25070, 46870, 50140, 93740, 107801, 215602, 431204, 539005, 1078010, 2156020]

約数ペア:

[(1, 2156020), (2, 1078010), (4, 539005), (5, 431204), (10, 215602), (20, 107801), (23, 93740), (43, 50140), (46, 46870), (86, 25070), (92, 23435), (109, 19780), (115, 18748), (172, 12535), (215, 10028), (218, 9890), (230, 9374), (430, 5014), (436, 4945), (460, 4687), (545, 3956), (860, 2507), (989, 2180), (1090, 1978)]