21041744

素因数分解:

$2^4\times {\mathrm{131}}^1\times {\mathrm{10039}}^1$

素因数の和:10178

約数の個数: 20

約数和(自身を含む): 41083680

約数和(自身を除く): 20041936

約数列:

[1, 2, 4, 8, 16, 131, 262, 524, 1048, 2096, 10039, 20078, 40156, 80312, 160624, 1315109, 2630218, 5260436, 10520872, 21041744]

約数ペア:

[(1, 21041744), (2, 10520872), (4, 5260436), (8, 2630218), (16, 1315109), (131, 160624), (262, 80312), (524, 40156), (1048, 20078), (2096, 10039)]