21756656

素因数分解:

$2^4\times {\mathrm{401}}^1\times {\mathrm{3391}}^1$

素因数の和:3800

約数の個数: 20

約数和(自身を含む): 42271104

約数和(自身を除く): 20514448

約数列:

[1, 2, 4, 8, 16, 401, 802, 1604, 3208, 3391, 6416, 6782, 13564, 27128, 54256, 1359791, 2719582, 5439164, 10878328, 21756656]

約数ペア:

[(1, 21756656), (2, 10878328), (4, 5439164), (8, 2719582), (16, 1359791), (401, 54256), (802, 27128), (1604, 13564), (3208, 6782), (3391, 6416)]