21081688

素因数分解:

$2^3\times {\mathrm{541}}^1\times {\mathrm{4871}}^1$

素因数の和:5418

約数の個数: 16

約数和(自身を含む): 39609360

約数和(自身を除く): 18527672

約数列:

[1, 2, 4, 8, 541, 1082, 2164, 4328, 4871, 9742, 19484, 38968, 2635211, 5270422, 10540844, 21081688]

約数ペア:

[(1, 21081688), (2, 10540844), (4, 5270422), (8, 2635211), (541, 38968), (1082, 19484), (2164, 9742), (4328, 4871)]