21071379

素因数分解:

$3^1\times 7^1\times {\mathrm{619}}^1\times {\mathrm{1621}}^1$

素因数の和:2250

約数の個数: 16

約数和(自身を含む): 32180480

約数和(自身を除く): 11109101

約数列:

[1, 3, 7, 21, 619, 1621, 1857, 4333, 4863, 11347, 12999, 34041, 1003399, 3010197, 7023793, 21071379]

約数ペア:

[(1, 21071379), (3, 7023793), (7, 3010197), (21, 1003399), (619, 34041), (1621, 12999), (1857, 11347), (4333, 4863)]