21129946

素因数分解:

$2^1\times {\mathrm{17}}^2\times {\mathrm{139}}^1\times {\mathrm{263}}^1$

素因数の和:438

約数の個数: 24

約数和(自身を含む): 34040160

約数和(自身を除く): 12910214

約数列:

[1, 2, 17, 34, 139, 263, 278, 289, 526, 578, 2363, 4471, 4726, 8942, 36557, 40171, 73114, 76007, 80342, 152014, 621469, 1242938, 10564973, 21129946]

約数ペア:

[(1, 21129946), (2, 10564973), (17, 1242938), (34, 621469), (139, 152014), (263, 80342), (278, 76007), (289, 73114), (526, 40171), (578, 36557), (2363, 8942), (4471, 4726)]