21171376

素因数分解:

$2^4\times {\mathrm{269}}^1\times {\mathrm{4919}}^1$

素因数の和:5196

約数の個数: 20

約数和(自身を含む): 41180400

約数和(自身を除く): 20009024

約数列:

[1, 2, 4, 8, 16, 269, 538, 1076, 2152, 4304, 4919, 9838, 19676, 39352, 78704, 1323211, 2646422, 5292844, 10585688, 21171376]

約数ペア:

[(1, 21171376), (2, 10585688), (4, 5292844), (8, 2646422), (16, 1323211), (269, 78704), (538, 39352), (1076, 19676), (2152, 9838), (4304, 4919)]