21221768

素因数分解:

$2^3\times {\mathrm{421}}^1\times {\mathrm{6301}}^1$

素因数の和:6728

約数の個数: 16

約数和(自身を含む): 39891660

約数和(自身を除く): 18669892

約数列:

[1, 2, 4, 8, 421, 842, 1684, 3368, 6301, 12602, 25204, 50408, 2652721, 5305442, 10610884, 21221768]

約数ペア:

[(1, 21221768), (2, 10610884), (4, 5305442), (8, 2652721), (421, 50408), (842, 25204), (1684, 12602), (3368, 6301)]