21429904

素因数分解:

$2^4\times {\mathrm{643}}^1\times {\mathrm{2083}}^1$

素因数の和:2734

約数の個数: 20

約数和(自身を含む): 41604976

約数和(自身を除く): 20175072

約数列:

[1, 2, 4, 8, 16, 643, 1286, 2083, 2572, 4166, 5144, 8332, 10288, 16664, 33328, 1339369, 2678738, 5357476, 10714952, 21429904]

約数ペア:

[(1, 21429904), (2, 10714952), (4, 5357476), (8, 2678738), (16, 1339369), (643, 33328), (1286, 16664), (2083, 10288), (2572, 8332), (4166, 5144)]