21195208

素因数分解:

$2^3\times {\mathrm{1109}}^1\times {\mathrm{2389}}^1$

素因数の和:3504

約数の個数: 16

約数和(自身を含む): 39793500

約数和(自身を除く): 18598292

約数列:

[1, 2, 4, 8, 1109, 2218, 2389, 4436, 4778, 8872, 9556, 19112, 2649401, 5298802, 10597604, 21195208]

約数ペア:

[(1, 21195208), (2, 10597604), (4, 5298802), (8, 2649401), (1109, 19112), (2218, 9556), (2389, 8872), (4436, 4778)]