21271306

素因数分解:

$2^1\times 7^1\times {\mathrm{439}}^1\times {\mathrm{3461}}^1$

素因数の和:3909

約数の個数: 16

約数和(自身を含む): 36558720

約数和(自身を除く): 15287414

約数列:

[1, 2, 7, 14, 439, 878, 3073, 3461, 6146, 6922, 24227, 48454, 1519379, 3038758, 10635653, 21271306]

約数ペア:

[(1, 21271306), (2, 10635653), (7, 3038758), (14, 1519379), (439, 48454), (878, 24227), (3073, 6922), (3461, 6146)]