15855640

素因数分解:

$2^3\times 5^1\times {\mathrm{389}}^1\times {\mathrm{1019}}^1$

素因数の和:1419

約数の個数: 32

約数和(自身を含む): 35802000

約数和(自身を除く): 19946360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 389, 778, 1019, 1556, 1945, 2038, 3112, 3890, 4076, 5095, 7780, 8152, 10190, 15560, 20380, 40760, 396391, 792782, 1585564, 1981955, 3171128, 3963910, 7927820, 15855640]

約数ペア:

[(1, 15855640), (2, 7927820), (4, 3963910), (5, 3171128), (8, 1981955), (10, 1585564), (20, 792782), (40, 396391), (389, 40760), (778, 20380), (1019, 15560), (1556, 10190), (1945, 8152), (2038, 7780), (3112, 5095), (3890, 4076)]