64387660

素因数分解:

$2^2\times 5^1\times {\mathrm{263}}^1\times {\mathrm{12241}}^1$

素因数の和:12513

約数の個数: 24

約数和(自身を含む): 135739296

約数和(自身を除く): 71351636

約数列:

[1, 2, 4, 5, 10, 20, 263, 526, 1052, 1315, 2630, 5260, 12241, 24482, 48964, 61205, 122410, 244820, 3219383, 6438766, 12877532, 16096915, 32193830, 64387660]

約数ペア:

[(1, 64387660), (2, 32193830), (4, 16096915), (5, 12877532), (10, 6438766), (20, 3219383), (263, 244820), (526, 122410), (1052, 61205), (1315, 48964), (2630, 24482), (5260, 12241)]