21406288

素因数分解:

$2^4\times {\mathrm{541}}^1\times {\mathrm{2473}}^1$

素因数の和:3022

約数の個数: 20

約数和(自身を含む): 41568148

約数和(自身を除く): 20161860

約数列:

[1, 2, 4, 8, 16, 541, 1082, 2164, 2473, 4328, 4946, 8656, 9892, 19784, 39568, 1337893, 2675786, 5351572, 10703144, 21406288]

約数ペア:

[(1, 21406288), (2, 10703144), (4, 5351572), (8, 2675786), (16, 1337893), (541, 39568), (1082, 19784), (2164, 9892), (2473, 8656), (4328, 4946)]