21342736

素因数分解:

$2^4\times {\mathrm{641}}^1\times {\mathrm{2081}}^1$

素因数の和:2730

約数の個数: 20

約数和(自身を含む): 41435964

約数和(自身を除く): 20093228

約数列:

[1, 2, 4, 8, 16, 641, 1282, 2081, 2564, 4162, 5128, 8324, 10256, 16648, 33296, 1333921, 2667842, 5335684, 10671368, 21342736]

約数ペア:

[(1, 21342736), (2, 10671368), (4, 5335684), (8, 2667842), (16, 1333921), (641, 33296), (1282, 16648), (2081, 10256), (2564, 8324), (4162, 5128)]