21384416

素因数分解:

$2^5\times {\mathrm{43}}^1\times {\mathrm{15541}}^1$

素因数の和:15594

約数の個数: 24

約数和(自身を含む): 43082424

約数和(自身を除く): 21698008

約数列:

[1, 2, 4, 8, 16, 32, 43, 86, 172, 344, 688, 1376, 15541, 31082, 62164, 124328, 248656, 497312, 668263, 1336526, 2673052, 5346104, 10692208, 21384416]

約数ペア:

[(1, 21384416), (2, 10692208), (4, 5346104), (8, 2673052), (16, 1336526), (32, 668263), (43, 497312), (86, 248656), (172, 124328), (344, 62164), (688, 31082), (1376, 15541)]