21045104

素因数分解:

$2^4\times {\mathrm{173}}^1\times {\mathrm{7603}}^1$

素因数の和:7784

約数の個数: 20

約数和(自身を含む): 41015976

約数和(自身を除く): 19970872

約数列:

[1, 2, 4, 8, 16, 173, 346, 692, 1384, 2768, 7603, 15206, 30412, 60824, 121648, 1315319, 2630638, 5261276, 10522552, 21045104]

約数ペア:

[(1, 21045104), (2, 10522552), (4, 5261276), (8, 2630638), (16, 1315319), (173, 121648), (346, 60824), (692, 30412), (1384, 15206), (2768, 7603)]