21903568

素因数分解:

$2^4\times {\mathrm{103}}^1\times {\mathrm{13291}}^1$

素因数の和:13402

約数の個数: 20

約数和(自身を含む): 42853408

約数和(自身を除く): 20949840

約数列:

[1, 2, 4, 8, 16, 103, 206, 412, 824, 1648, 13291, 26582, 53164, 106328, 212656, 1368973, 2737946, 5475892, 10951784, 21903568]

約数ペア:

[(1, 21903568), (2, 10951784), (4, 5475892), (8, 2737946), (16, 1368973), (103, 212656), (206, 106328), (412, 53164), (824, 26582), (1648, 13291)]