20516504

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{43}}^2\times {\mathrm{73}}^1$

素因数の和:184

約数の個数: 48

約数和(自身を含む): 42024600

約数和(自身を除く): 21508096

約数列:

[1, 2, 4, 8, 19, 38, 43, 73, 76, 86, 146, 152, 172, 292, 344, 584, 817, 1387, 1634, 1849, 2774, 3139, 3268, 3698, 5548, 6278, 6536, 7396, 11096, 12556, 14792, 25112, 35131, 59641, 70262, 119282, 134977, 140524, 238564, 269954, 281048, 477128, 539908, 1079816, 2564563, 5129126, 10258252, 20516504]

約数ペア:

[(1, 20516504), (2, 10258252), (4, 5129126), (8, 2564563), (19, 1079816), (38, 539908), (43, 477128), (73, 281048), (76, 269954), (86, 238564), (146, 140524), (152, 134977), (172, 119282), (292, 70262), (344, 59641), (584, 35131), (817, 25112), (1387, 14792), (1634, 12556), (1849, 11096), (2774, 7396), (3139, 6536), (3268, 6278), (3698, 5548)]