21693328

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{31531}}^1$

素因数の和:31582

約数の個数: 20

約数和(自身を含む): 43009648

約数和(自身を除く): 21316320

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 31531, 63062, 126124, 252248, 504496, 1355833, 2711666, 5423332, 10846664, 21693328]

約数ペア:

[(1, 21693328), (2, 10846664), (4, 5423332), (8, 2711666), (16, 1355833), (43, 504496), (86, 252248), (172, 126124), (344, 63062), (688, 31531)]