21105584

素因数分解:

$2^4\times {\mathrm{389}}^1\times {\mathrm{3391}}^1$

素因数の和:3788

約数の個数: 20

約数和(自身を含む): 41009280

約数和(自身を除く): 19903696

約数列:

[1, 2, 4, 8, 16, 389, 778, 1556, 3112, 3391, 6224, 6782, 13564, 27128, 54256, 1319099, 2638198, 5276396, 10552792, 21105584]

約数ペア:

[(1, 21105584), (2, 10552792), (4, 5276396), (8, 2638198), (16, 1319099), (389, 54256), (778, 27128), (1556, 13564), (3112, 6782), (3391, 6224)]