256836490

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{401}}^1\times {\mathrm{3371}}^1$

素因数の和:3798

約数の個数: 32

約数和(自身を含む): 487995840

約数和(自身を除く): 231159350

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 401, 802, 2005, 3371, 4010, 6742, 7619, 15238, 16855, 33710, 38095, 64049, 76190, 128098, 320245, 640490, 1351771, 2703542, 6758855, 13517710, 25683649, 51367298, 128418245, 256836490]

約数ペア:

[(1, 256836490), (2, 128418245), (5, 51367298), (10, 25683649), (19, 13517710), (38, 6758855), (95, 2703542), (190, 1351771), (401, 640490), (802, 320245), (2005, 128098), (3371, 76190), (4010, 64049), (6742, 38095), (7619, 33710), (15238, 16855)]