20151585880

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{1960271}}^1$

素因数の和:1960539

約数の個数: 32

約数和(自身を含む): 45517515840

約数和(自身を除く): 25365929960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 2056, 2570, 5140, 10280, 1960271, 3920542, 7841084, 9801355, 15682168, 19602710, 39205420, 78410840, 503789647, 1007579294, 2015158588, 2518948235, 4030317176, 5037896470, 10075792940, 20151585880]

約数ペア:

[(1, 20151585880), (2, 10075792940), (4, 5037896470), (5, 4030317176), (8, 2518948235), (10, 2015158588), (20, 1007579294), (40, 503789647), (257, 78410840), (514, 39205420), (1028, 19602710), (1285, 15682168), (2056, 9801355), (2570, 7841084), (5140, 3920542), (10280, 1960271)]